diff --git a/Gemfile.lock b/Gemfile.lock
index f5b3b9f64e..2ed3983b9a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -590,7 +590,7 @@ GEM
       unicode-display_width (>= 1.4.0, < 3.0)
     rubocop-ast (1.15.1)
       parser (>= 3.0.1.1)
-    rubocop-performance (1.12.0)
+    rubocop-performance (1.13.1)
       rubocop (>= 1.7.0, < 2.0)
       rubocop-ast (>= 0.4.0)
     rubocop-rails (2.13.1)
diff --git a/app/helpers/check_answers_helper.rb b/app/helpers/check_answers_helper.rb
index 3cddc7c046..bf8e5ca6a7 100644
--- a/app/helpers/check_answers_helper.rb
+++ b/app/helpers/check_answers_helper.rb
@@ -81,7 +81,7 @@ def check_long_question_for_cash_transactions(name:, question:, legal_aid_applic
   end
 
   def number_to_currency_or_na(number)
-    number.to_d == 999_999_999_999.0.to_d ? 'N/a' : gds_number_to_currency(number)
+    number.to_d == BigDecimal('999_999_999_999.0') ? 'N/a' : gds_number_to_currency(number)
   end
 
   def safe_yes_or_no(value)
diff --git a/app/services/ccms/payload_generators/entity_attributes_generator.rb b/app/services/ccms/payload_generators/entity_attributes_generator.rb
index b2ffde2374..855d22b49e 100644
--- a/app/services/ccms/payload_generators/entity_attributes_generator.rb
+++ b/app/services/ccms/payload_generators/entity_attributes_generator.rb
@@ -26,11 +26,11 @@ def call
           next unless generate_attribute_block?(config)
 
           response_value = extract_response_value(config)
-          @xml.__send__('common:Attribute') do
-            @xml.__send__('common:Attribute', attribute_name)
-            @xml.__send__('common:ResponseType', config[:response_type])
-            @xml.__send__('common:ResponseValue', response_value)
-            @xml.__send__('common:UserDefinedInd', config[:user_defined])
+          @xml.__send__(:'common:Attribute') do
+            @xml.__send__(:'common:Attribute', attribute_name)
+            @xml.__send__(:'common:ResponseType', config[:response_type])
+            @xml.__send__(:'common:ResponseValue', response_value)
+            @xml.__send__(:'common:UserDefinedInd', config[:user_defined])
           end
         end
       end
diff --git a/app/services/ccms/requestors/applicant_add_requestor.rb b/app/services/ccms/requestors/applicant_add_requestor.rb
index 0064f31910..e810a4acca 100644
--- a/app/services/ccms/requestors/applicant_add_requestor.rb
+++ b/app/services/ccms/requestors/applicant_add_requestor.rb
@@ -24,48 +24,48 @@ def request_xml
       end
 
       def soap_body(xml)
-        xml.__send__('clientbim:ClientAddRQ') do
-          xml.__send__('hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
-          xml.__send__('clientbim:Client') { client(xml) }
+        xml.__send__(:'clientbim:ClientAddRQ') do
+          xml.__send__(:'hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
+          xml.__send__(:'clientbim:Client') { client(xml) }
         end
       end
 
       def client(xml)
-        xml.__send__('clientbio:Name') { name(xml) }
-        xml.__send__('clientbio:PersonalInformation') { personal_information(xml) }
-        xml.__send__('clientbio:Contacts') { contacts(xml) }
-        xml.__send__('clientbio:NoFixedAbode', false)
-        xml.__send__('clientbio:Address') { applicant_address(xml) }
-        xml.__send__('clientbio:EthnicMonitoring', 0)
+        xml.__send__(:'clientbio:Name') { name(xml) }
+        xml.__send__(:'clientbio:PersonalInformation') { personal_information(xml) }
+        xml.__send__(:'clientbio:Contacts') { contacts(xml) }
+        xml.__send__(:'clientbio:NoFixedAbode', false)
+        xml.__send__(:'clientbio:Address') { applicant_address(xml) }
+        xml.__send__(:'clientbio:EthnicMonitoring', 0)
       end
 
       def name(xml)
-        xml.__send__('common:Surname', applicant.last_name)
-        xml.__send__('common:FirstName', applicant.first_name)
+        xml.__send__(:'common:Surname', applicant.last_name)
+        xml.__send__(:'common:FirstName', applicant.first_name)
       end
 
       # this is all mandatory: we don't hold any of this data except date of birth
       def personal_information(xml)
-        xml.__send__('clientbio:DateOfBirth', applicant.date_of_birth.to_s(:ccms_date))
-        xml.__send__('clientbio:Gender', 'UNSPECIFIED')
-        xml.__send__('clientbio:MaritalStatus', 'U')
-        xml.__send__('clientbio:VulnerableClient', false)
-        xml.__send__('clientbio:HighProfileClient', false)
-        xml.__send__('clientbio:VexatiousLitigant', false)
-        xml.__send__('clientbio:CountryOfOrigin', 'GBR')
-        xml.__send__('clientbio:MentalCapacityInd', false)
+        xml.__send__(:'clientbio:DateOfBirth', applicant.date_of_birth.to_s(:ccms_date))
+        xml.__send__(:'clientbio:Gender', 'UNSPECIFIED')
+        xml.__send__(:'clientbio:MaritalStatus', 'U')
+        xml.__send__(:'clientbio:VulnerableClient', false)
+        xml.__send__(:'clientbio:HighProfileClient', false)
+        xml.__send__(:'clientbio:VexatiousLitigant', false)
+        xml.__send__(:'clientbio:CountryOfOrigin', 'GBR')
+        xml.__send__(:'clientbio:MentalCapacityInd', false)
       end
 
       # this is the only mandatory item of contact data. i'm not sure what it's for...
       def contacts(xml)
-        xml.__send__('clientbio:Password', 'Testing')
+        xml.__send__(:'clientbio:Password', 'Testing')
       end
 
       def applicant_address(xml)
-        xml.__send__('common:AddressLine1', address.first_lines)
-        xml.__send__('common:City', address.city)
-        xml.__send__('common:Country', 'GBR')
-        xml.__send__('common:PostalCode', address.pretty_postcode)
+        xml.__send__(:'common:AddressLine1', address.first_lines)
+        xml.__send__(:'common:City', address.city)
+        xml.__send__(:'common:Country', 'GBR')
+        xml.__send__(:'common:PostalCode', address.pretty_postcode)
       end
     end
   end
diff --git a/app/services/ccms/requestors/applicant_add_status_requestor.rb b/app/services/ccms/requestors/applicant_add_status_requestor.rb
index a8c905c4ca..251168465e 100644
--- a/app/services/ccms/requestors/applicant_add_status_requestor.rb
+++ b/app/services/ccms/requestors/applicant_add_status_requestor.rb
@@ -22,9 +22,9 @@ def request_xml
       end
 
       def soap_body(xml)
-        xml.__send__('clientbim:ClientAddUpdtStatusRQ') do
-          xml.__send__('hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
-          xml.__send__('clientbim:TransactionID', applicant_add_transaction_id)
+        xml.__send__(:'clientbim:ClientAddUpdtStatusRQ') do
+          xml.__send__(:'hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
+          xml.__send__(:'clientbim:TransactionID', applicant_add_transaction_id)
         end
       end
     end
diff --git a/app/services/ccms/requestors/applicant_search_requestor.rb b/app/services/ccms/requestors/applicant_search_requestor.rb
index 830eecebdf..7ed263c11f 100644
--- a/app/services/ccms/requestors/applicant_search_requestor.rb
+++ b/app/services/ccms/requestors/applicant_search_requestor.rb
@@ -20,24 +20,24 @@ def request_xml
       end
 
       def soap_body(xml)
-        xml.__send__('clientbim:ClientInqRQ') do
-          xml.__send__('hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
-          xml.__send__('clientbim:RecordCount') { record_count(xml) }
-          xml.__send__('clientbim:SearchCriteria') { search_criteria(xml) }
+        xml.__send__(:'clientbim:ClientInqRQ') do
+          xml.__send__(:'hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
+          xml.__send__(:'clientbim:RecordCount') { record_count(xml) }
+          xml.__send__(:'clientbim:SearchCriteria') { search_criteria(xml) }
         end
       end
 
       def record_count(xml)
-        xml.__send__('common:MaxRecordsToFetch', 200)
-        xml.__send__('common:RetriveDataOnMaxCount', false)
+        xml.__send__(:'common:MaxRecordsToFetch', 200)
+        xml.__send__(:'common:RetriveDataOnMaxCount', false)
       end
 
       def search_criteria(xml)
-        xml.__send__('clientbim:ClientInfo') do
-          xml.__send__('clientbio:FirstName', @applicant.first_name)
-          xml.__send__('clientbio:Surname', @applicant.last_name)
-          xml.__send__('clientbio:DateOfBirth', @applicant.date_of_birth.to_s(:ccms_date))
-          xml.__send__('clientbio:NINumber', @applicant.national_insurance_number)
+        xml.__send__(:'clientbim:ClientInfo') do
+          xml.__send__(:'clientbio:FirstName', @applicant.first_name)
+          xml.__send__(:'clientbio:Surname', @applicant.last_name)
+          xml.__send__(:'clientbio:DateOfBirth', @applicant.date_of_birth.to_s(:ccms_date))
+          xml.__send__(:'clientbio:NINumber', @applicant.national_insurance_number)
         end
       end
     end
diff --git a/app/services/ccms/requestors/base_requestor.rb b/app/services/ccms/requestors/base_requestor.rb
index 84b0b0e154..ff2efae84b 100644
--- a/app/services/ccms/requestors/base_requestor.rb
+++ b/app/services/ccms/requestors/base_requestor.rb
@@ -70,18 +70,18 @@ def soap_client
 
       def soap_envelope(namespaces)
         Nokogiri::XML::Builder.new(encoding: 'UTF-8') do |xml|
-          xml.__send__('soap:Envelope', namespaces) do
-            xml.__send__('soap:Header') { soap_header(xml) }
-            xml.__send__('soap:Body') { soap_body(xml) }
+          xml.__send__(:'soap:Envelope', namespaces) do
+            xml.__send__(:'soap:Header') { soap_header(xml) }
+            xml.__send__(:'soap:Body') { soap_body(xml) }
           end
         end
       end
 
       def soap_header(xml)
-        xml.__send__('secext:Security') do
-          xml.__send__('secext:UsernameToken') do
-            xml.__send__('secext:Username', config.client_username)
-            xml.__send__('secext:Password', 'Type' => config.client_password_type) do
+        xml.__send__(:'secext:Security') do
+          xml.__send__(:'secext:UsernameToken') do
+            xml.__send__(:'secext:Username', config.client_username)
+            xml.__send__(:'secext:Password', 'Type' => config.client_password_type) do
               xml.text(config.client_password)
             end
           end
@@ -89,10 +89,10 @@ def soap_header(xml)
       end
 
       def ns3_header_rq(xml, provider_username)
-        xml.__send__('hdr:TransactionRequestID', transaction_request_id)
-        xml.__send__('hdr:Language', 'ENG')
-        xml.__send__('hdr:UserLoginID', provider_username)
-        xml.__send__('hdr:UserRole', config.user_role)
+        xml.__send__(:'hdr:TransactionRequestID', transaction_request_id)
+        xml.__send__(:'hdr:Language', 'ENG')
+        xml.__send__(:'hdr:UserLoginID', provider_username)
+        xml.__send__(:'hdr:UserRole', config.user_role)
       end
 
       def wsdl_location
diff --git a/app/services/ccms/requestors/case_add_requestor.rb b/app/services/ccms/requestors/case_add_requestor.rb
index b4738260cc..dd74e34a24 100644
--- a/app/services/ccms/requestors/case_add_requestor.rb
+++ b/app/services/ccms/requestors/case_add_requestor.rb
@@ -73,47 +73,47 @@ def request_xml
       end
 
       def soap_body(xml)
-        xml.__send__('casebim:CaseAddRQ') do
-          xml.__send__('hdr:HeaderRQ') { header_request(xml) }
-          xml.__send__('casebim:Case') { case_request(xml) }
+        xml.__send__(:'casebim:CaseAddRQ') do
+          xml.__send__(:'hdr:HeaderRQ') { header_request(xml) }
+          xml.__send__(:'casebim:Case') { case_request(xml) }
         end
       end
 
       def header_request(xml)
-        xml.__send__('hdr:TransactionRequestID', transaction_request_id)
-        xml.__send__('hdr:Language', 'ENG')
-        xml.__send__('hdr:UserLoginID', provider.username)
-        xml.__send__('hdr:UserRole', 'EXTERNAL')
+        xml.__send__(:'hdr:TransactionRequestID', transaction_request_id)
+        xml.__send__(:'hdr:Language', 'ENG')
+        xml.__send__(:'hdr:UserLoginID', provider.username)
+        xml.__send__(:'hdr:UserRole', 'EXTERNAL')
       end
 
       def case_request(xml)
-        xml.__send__('casebio:CaseReferenceNumber', @submission.case_ccms_reference)
-        xml.__send__('casebio:CaseDetails') do
-          xml.__send__('casebio:ApplicationDetails') { generate_application_details(xml) }
-          xml.__send__('casebio:RecordHistory') { generate_record_history(xml) }
-          xml.__send__('casebio:CaseDocs') { generate_case_docs(xml) }
+        xml.__send__(:'casebio:CaseReferenceNumber', @submission.case_ccms_reference)
+        xml.__send__(:'casebio:CaseDetails') do
+          xml.__send__(:'casebio:ApplicationDetails') { generate_application_details(xml) }
+          xml.__send__(:'casebio:RecordHistory') { generate_record_history(xml) }
+          xml.__send__(:'casebio:CaseDocs') { generate_case_docs(xml) }
         end
       end
 
       def generate_application_details(xml) # rubocop:disable Metrics/AbcSize
-        xml.__send__('casebio:Client') { generate_client(xml) }
-        xml.__send__('casebio:PreferredAddress', 'CLIENT')
-        xml.__send__('casebio:ProviderDetails') { generate_provider_details(xml) }
-        xml.__send__('casebio:CategoryOfLaw') { generate_category_of_law(xml) }
-        xml.__send__('casebio:OtherParties') { generate_other_parties(xml) }
-        xml.__send__('casebio:Proceedings') { generate_proceedings(xml) }
-        xml.__send__('casebio:MeansAssesments') { generate_means_assessment(xml) }
-        xml.__send__('casebio:MeritsAssesments') { generate_merits_assessment(xml) }
-        xml.__send__('casebio:DevolvedPowersDate', @legal_aid_application.used_delegated_functions_on.to_s(:ccms_date)) if @legal_aid_application.used_delegated_functions?
-        xml.__send__('casebio:ApplicationAmendmentType', @legal_aid_application.used_delegated_functions? ? 'SUBDP' : 'SUB')
-        xml.__send__('casebio:LARDetails') { generate_lar_details(xml) }
+        xml.__send__(:'casebio:Client') { generate_client(xml) }
+        xml.__send__(:'casebio:PreferredAddress', 'CLIENT')
+        xml.__send__(:'casebio:ProviderDetails') { generate_provider_details(xml) }
+        xml.__send__(:'casebio:CategoryOfLaw') { generate_category_of_law(xml) }
+        xml.__send__(:'casebio:OtherParties') { generate_other_parties(xml) }
+        xml.__send__(:'casebio:Proceedings') { generate_proceedings(xml) }
+        xml.__send__(:'casebio:MeansAssesments') { generate_means_assessment(xml) }
+        xml.__send__(:'casebio:MeritsAssesments') { generate_merits_assessment(xml) }
+        xml.__send__(:'casebio:DevolvedPowersDate', @legal_aid_application.used_delegated_functions_on.to_s(:ccms_date)) if @legal_aid_application.used_delegated_functions?
+        xml.__send__(:'casebio:ApplicationAmendmentType', @legal_aid_application.used_delegated_functions? ? 'SUBDP' : 'SUB')
+        xml.__send__(:'casebio:LARDetails') { generate_lar_details(xml) }
       end
 
       def generate_case_docs(xml)
         @submission.submission_documents.each do |document|
-          xml.__send__('casebio:CaseDoc') do
-            xml.__send__('casebio:CCMSDocumentID', document.ccms_document_id)
-            xml.__send__('casebio:DocumentSubject', document.document_type)
+          xml.__send__(:'casebio:CaseDoc') do
+            xml.__send__(:'casebio:CCMSDocumentID', document.ccms_document_id)
+            xml.__send__(:'casebio:DocumentSubject', document.document_type)
           end
         end
       end
@@ -128,20 +128,20 @@ def generate_other_parties(xml)
 
       def generate_opponent(xml, opponent) # rubocop:disable Metrics/MethodLength
         first_name, last_name = opponent.split_full_name
-        xml.__send__('casebio:OtherParty') do
-          xml.__send__('casebio:OtherPartyID', "OPPONENT_#{opponent.generate_ccms_opponent_id}")
-          xml.__send__('casebio:SharedInd', false)
-          xml.__send__('casebio:OtherPartyDetail') do
-            xml.__send__('casebio:Person') do
-              xml.__send__('casebio:Name') do
-                xml.__send__('common:Title', '')
-                xml.__send__('common:Surname', last_name)
-                xml.__send__('common:FirstName', first_name)
+        xml.__send__(:'casebio:OtherParty') do
+          xml.__send__(:'casebio:OtherPartyID', "OPPONENT_#{opponent.generate_ccms_opponent_id}")
+          xml.__send__(:'casebio:SharedInd', false)
+          xml.__send__(:'casebio:OtherPartyDetail') do
+            xml.__send__(:'casebio:Person') do
+              xml.__send__(:'casebio:Name') do
+                xml.__send__(:'common:Title', '')
+                xml.__send__(:'common:Surname', last_name)
+                xml.__send__(:'common:FirstName', first_name)
               end
-              xml.__send__('casebio:Address')
-              xml.__send__('casebio:RelationToClient', 'NONE')
-              xml.__send__('casebio:RelationToCase', 'OPP')
-              xml.__send__('casebio:ContactDetails')
+              xml.__send__(:'casebio:Address')
+              xml.__send__(:'casebio:RelationToClient', 'NONE')
+              xml.__send__(:'casebio:RelationToCase', 'OPP')
+              xml.__send__(:'casebio:ContactDetails')
             end
           end
         end
@@ -149,58 +149,58 @@ def generate_opponent(xml, opponent) # rubocop:disable Metrics/MethodLength
 
       def generate_involved_child(xml, child) # rubocop:disable Metrics/AbcSize, Metrics/MethodLength
         first_name, last_name = child.split_full_name
-        xml.__send__('casebio:OtherParty') do
-          xml.__send__('casebio:OtherPartyID', "OPPONENT_#{child.generate_ccms_opponent_id}")
-          xml.__send__('casebio:SharedInd', false)
-          xml.__send__('casebio:OtherPartyDetail') do
-            xml.__send__('casebio:Person') do
-              xml.__send__('casebio:Name') do
-                xml.__send__('common:Title', '')
-                xml.__send__('common:Surname', last_name)
-                xml.__send__('common:FirstName', first_name)
+        xml.__send__(:'casebio:OtherParty') do
+          xml.__send__(:'casebio:OtherPartyID', "OPPONENT_#{child.generate_ccms_opponent_id}")
+          xml.__send__(:'casebio:SharedInd', false)
+          xml.__send__(:'casebio:OtherPartyDetail') do
+            xml.__send__(:'casebio:Person') do
+              xml.__send__(:'casebio:Name') do
+                xml.__send__(:'common:Title', '')
+                xml.__send__(:'common:Surname', last_name)
+                xml.__send__(:'common:FirstName', first_name)
               end
-              xml.__send__('casebio:DateOfBirth', child.date_of_birth.strftime('%F'))
-              xml.__send__('casebio:Address')
-              xml.__send__('casebio:RelationToClient', 'UNKNOWN')
-              xml.__send__('casebio:RelationToCase', 'CHILD')
-              xml.__send__('casebio:ContactDetails')
+              xml.__send__(:'casebio:DateOfBirth', child.date_of_birth.strftime('%F'))
+              xml.__send__(:'casebio:Address')
+              xml.__send__(:'casebio:RelationToClient', 'UNKNOWN')
+              xml.__send__(:'casebio:RelationToCase', 'CHILD')
+              xml.__send__(:'casebio:ContactDetails')
             end
           end
         end
       end
 
       def generate_record_history(xml)
-        xml.__send__('common:DateCreated', Time.current.to_s(:ccms_date_time))
-        xml.__send__('common:LastUpdatedBy') do
-          xml.__send__('common:UserLoginID', provider.username)
-          xml.__send__('common:UserName', provider.username)
-          xml.__send__('common:UserType', 'EXTERNAL')
+        xml.__send__(:'common:DateCreated', Time.current.to_s(:ccms_date_time))
+        xml.__send__(:'common:LastUpdatedBy') do
+          xml.__send__(:'common:UserLoginID', provider.username)
+          xml.__send__(:'common:UserName', provider.username)
+          xml.__send__(:'common:UserType', 'EXTERNAL')
         end
-        xml.__send__('common:DateLastUpdated', Time.current.to_s(:ccms_date_time))
+        xml.__send__(:'common:DateLastUpdated', Time.current.to_s(:ccms_date_time))
       end
 
       def generate_lar_details(xml)
-        xml.__send__('casebio:LARScopeFlag', true)
+        xml.__send__(:'casebio:LARScopeFlag', true)
       end
 
       def generate_client(xml)
-        xml.__send__('casebio:ClientReferenceNumber', @submission.applicant_ccms_reference)
-        xml.__send__('casebio:FirstName', applicant.first_name)
-        xml.__send__('casebio:Surname', applicant.last_name)
+        xml.__send__(:'casebio:ClientReferenceNumber', @submission.applicant_ccms_reference)
+        xml.__send__(:'casebio:FirstName', applicant.first_name)
+        xml.__send__(:'casebio:Surname', applicant.last_name)
       end
 
       def generate_provider_details(xml)
-        xml.__send__('casebio:ProviderFirmID', provider.firm.ccms_id)
-        xml.__send__('casebio:ProviderOfficeID', @legal_aid_application.office.ccms_id)
-        xml.__send__('casebio:ContactUserID') do
-          xml.__send__('common:UserLoginID', provider.contact_id)
+        xml.__send__(:'casebio:ProviderFirmID', provider.firm.ccms_id)
+        xml.__send__(:'casebio:ProviderOfficeID', @legal_aid_application.office.ccms_id)
+        xml.__send__(:'casebio:ContactUserID') do
+          xml.__send__(:'common:UserLoginID', provider.contact_id)
         end
       end
 
       def generate_category_of_law(xml)
-        xml.__send__('casebio:CategoryOfLawCode', @legal_aid_application.lead_proceeding.category_law_code)
-        xml.__send__('casebio:CategoryOfLawDescription', @legal_aid_application.lead_proceeding.category_of_law)
-        xml.__send__('casebio:RequestedAmount', as_currency(@legal_aid_application.substantive_cost_limitation))
+        xml.__send__(:'casebio:CategoryOfLawCode', @legal_aid_application.lead_proceeding.category_law_code)
+        xml.__send__(:'casebio:CategoryOfLawDescription', @legal_aid_application.lead_proceeding.category_of_law)
+        xml.__send__(:'casebio:RequestedAmount', as_currency(@legal_aid_application.substantive_cost_limitation))
       end
 
       def generate_proceedings(xml)
@@ -208,56 +208,56 @@ def generate_proceedings(xml)
       end
 
       def generate_proceeding(xml, proceeding)
-        xml.__send__('casebio:Proceeding') do
-          xml.__send__('casebio:ProceedingCaseID', proceeding.case_p_num)
-          xml.__send__('casebio:Status', 'Draft')
-          xml.__send__('casebio:LeadProceedingIndicator', proceeding.lead_proceeding)
-          xml.__send__('casebio:ProceedingDetails') { generate_proceeding_type(xml, proceeding) }
+        xml.__send__(:'casebio:Proceeding') do
+          xml.__send__(:'casebio:ProceedingCaseID', proceeding.case_p_num)
+          xml.__send__(:'casebio:Status', 'Draft')
+          xml.__send__(:'casebio:LeadProceedingIndicator', proceeding.lead_proceeding)
+          xml.__send__(:'casebio:ProceedingDetails') { generate_proceeding_type(xml, proceeding) }
         end
       end
 
       def generate_proceeding_type(xml, proceeding)
-        xml.__send__('casebio:ProceedingType', proceeding.ccms_code)
-        xml.__send__('casebio:ProceedingDescription', proceeding.description)
-        xml.__send__('casebio:MatterType', proceeding.ccms_matter_code)
-        xml.__send__('casebio:LevelOfService', proceeding.default_level_of_service_level)
-        xml.__send__('casebio:Stage', 8) # TODO: CCMS placeholder - This will need reviewing when we add more proceedings and/or matter types
-        xml.__send__('casebio:ClientInvolvementType', 'A')
-        xml.__send__('casebio:ScopeLimitations') { generate_scope_limitations(xml, proceeding) }
+        xml.__send__(:'casebio:ProceedingType', proceeding.ccms_code)
+        xml.__send__(:'casebio:ProceedingDescription', proceeding.description)
+        xml.__send__(:'casebio:MatterType', proceeding.ccms_matter_code)
+        xml.__send__(:'casebio:LevelOfService', proceeding.default_level_of_service_level)
+        xml.__send__(:'casebio:Stage', 8) # TODO: CCMS placeholder - This will need reviewing when we add more proceedings and/or matter types
+        xml.__send__(:'casebio:ClientInvolvementType', 'A')
+        xml.__send__(:'casebio:ScopeLimitations') { generate_scope_limitations(xml, proceeding) }
       end
 
       def generate_scope_limitations(xml, proceeding)
-        xml.__send__('casebio:ScopeLimitation') do
-          xml.__send__('casebio:ScopeLimitation', proceeding.substantive_scope_limitation_code)
-          xml.__send__('casebio:ScopeLimitationWording', proceeding.substantive_scope_limitation_description)
-          xml.__send__('casebio:DelegatedFunctionsApply', false)
+        xml.__send__(:'casebio:ScopeLimitation') do
+          xml.__send__(:'casebio:ScopeLimitation', proceeding.substantive_scope_limitation_code)
+          xml.__send__(:'casebio:ScopeLimitationWording', proceeding.substantive_scope_limitation_description)
+          xml.__send__(:'casebio:DelegatedFunctionsApply', false)
         end
         return if proceeding.used_delegated_functions_on.nil?
 
-        xml.__send__('casebio:ScopeLimitation') do
-          xml.__send__('casebio:ScopeLimitation', proceeding.delegated_functions_scope_limitation_code)
-          xml.__send__('casebio:ScopeLimitationWording', proceeding.delegated_functions_scope_limitation_description)
-          xml.__send__('casebio:DelegatedFunctionsApply', true)
+        xml.__send__(:'casebio:ScopeLimitation') do
+          xml.__send__(:'casebio:ScopeLimitation', proceeding.delegated_functions_scope_limitation_code)
+          xml.__send__(:'casebio:ScopeLimitationWording', proceeding.delegated_functions_scope_limitation_description)
+          xml.__send__(:'casebio:DelegatedFunctionsApply', true)
         end
       end
 
       def generate_means_assessment(xml)
-        xml.__send__('casebio:AssesmentResults') do
-          xml.__send__('common:Results') { generate_means_assessment_results(xml) }
-          xml.__send__('common:AssesmentDetails') { generate_means_assessment_details(xml) }
+        xml.__send__(:'casebio:AssesmentResults') do
+          xml.__send__(:'common:Results') { generate_means_assessment_results(xml) }
+          xml.__send__(:'common:AssesmentDetails') { generate_means_assessment_details(xml) }
         end
       end
 
       def generate_means_assessment_results(xml)
-        xml.__send__('common:Goal') do
-          xml.__send__('common:Attribute', 'CLIENT_PROV_LA')
-          xml.__send__('common:AttributeValue', true)
+        xml.__send__(:'common:Goal') do
+          xml.__send__(:'common:Attribute', 'CLIENT_PROV_LA')
+          xml.__send__(:'common:AttributeValue', true)
         end
       end
 
       def generate_means_assessment_details(xml)
-        xml.__send__('common:AssessmentScreens') do
-          xml.__send__('common:ScreenName', 'SUMMARY')
+        xml.__send__(:'common:AssessmentScreens') do
+          xml.__send__(:'common:ScreenName', 'SUMMARY')
           sequence_no = 1
           means_entity_configs.each do |config|
             if predicate_true?(config)
@@ -269,15 +269,15 @@ def generate_means_assessment_details(xml)
       end
 
       def generate_opponent_other_parties_means_entity(xml, sequence_no, config)
-        xml.__send__('common:SequenceNumber', sequence_no)
-        xml.__send__('common:EntityName', 'OPPONENT_OTHER_PARTIES')
+        xml.__send__(:'common:SequenceNumber', sequence_no)
+        xml.__send__(:'common:EntityName', 'OPPONENT_OTHER_PARTIES')
         other_parties.each { |other_party| generate_opponent_other_parties_means_instance(xml, other_party, config) }
       end
 
       def generate_opponent_other_parties_means_instance(xml, other_party, config)
-        xml.__send__('common:Instances') do
-          xml.__send__('common:InstanceLabel', "OPPONENT_#{other_party.generate_ccms_opponent_id}")
-          xml.__send__('common:Attributes') do
+        xml.__send__(:'common:Instances') do
+          xml.__send__(:'common:InstanceLabel', "OPPONENT_#{other_party.generate_ccms_opponent_id}")
+          xml.__send__(:'common:Attributes') do
             EntityAttributesGenerator.call(self, xml, config[:yaml_section], other_party: other_party)
           end
         end
@@ -296,7 +296,7 @@ def predicate_true?(config)
 
       def generate_entity_from_config(xml, sequence_no, config)
         config[:resolved_instance_label] = resolve_instance_label(config)
-        xml.__send__('common:Entity') do
+        xml.__send__(:'common:Entity') do
           __send__(config[:method], xml, sequence_no, config)
         end
       end
@@ -311,52 +311,52 @@ def resolve_instance_label(config)
       end
 
       def generate_valuable_possessions_entity(xml, sequence_no, config)
-        xml.__send__('common:SequenceNumber', sequence_no)
-        xml.__send__('common:EntityName', config[:entity_name])
-        xml.__send__('common:Instances') do
-          xml.__send__('common:InstanceLabel', config[:instance_label])
-          xml.__send__('common:Attributes') { EntityAttributesGenerator.call(self, xml, config[:yaml_section]) }
+        xml.__send__(:'common:SequenceNumber', sequence_no)
+        xml.__send__(:'common:EntityName', config[:entity_name])
+        xml.__send__(:'common:Instances') do
+          xml.__send__(:'common:InstanceLabel', config[:instance_label])
+          xml.__send__(:'common:Attributes') { EntityAttributesGenerator.call(self, xml, config[:yaml_section]) }
         end
       end
 
       def generate_bank_accounts_entity(xml, sequence_no, config)
-        xml.__send__('common:SequenceNumber', sequence_no)
-        xml.__send__('common:EntityName', config[:entity_name])
+        xml.__send__(:'common:SequenceNumber', sequence_no)
+        xml.__send__(:'common:EntityName', config[:entity_name])
         bank_accounts.each_with_index { |acct, index| generate_bank_account_instance(xml, acct, config, index) }
       end
 
       def generate_bank_account_instance(xml, bank_account, config, index)
-        xml.__send__('common:Instances') do
-          xml.__send__('common:InstanceLabel', bank_account.ccms_instance_name(index))
-          xml.__send__('common:Attributes') { EntityAttributesGenerator.call(self, xml, config[:yaml_section], bank_acct: bank_account) }
+        xml.__send__(:'common:Instances') do
+          xml.__send__(:'common:InstanceLabel', bank_account.ccms_instance_name(index))
+          xml.__send__(:'common:Attributes') { EntityAttributesGenerator.call(self, xml, config[:yaml_section], bank_acct: bank_account) }
         end
       end
 
       def generate_vehicles_entity(xml, sequence_no, config)
-        xml.__send__('common:SequenceNumber', sequence_no)
-        xml.__send__('common:EntityName', config[:entity_name])
+        xml.__send__(:'common:SequenceNumber', sequence_no)
+        xml.__send__(:'common:EntityName', config[:entity_name])
         generate_vehicle_instance(xml, vehicle, config) if vehicle
       end
 
       def generate_vehicle_instance(xml, vehicle, config)
-        xml.__send__('common:Instances') do
-          xml.__send__('common:InstanceLabel', config[:instance_label])
-          xml.__send__('common:Attributes') { EntityAttributesGenerator.call(self, xml, config[:yaml_section], vehicle: vehicle) }
+        xml.__send__(:'common:Instances') do
+          xml.__send__(:'common:InstanceLabel', config[:instance_label])
+          xml.__send__(:'common:Attributes') { EntityAttributesGenerator.call(self, xml, config[:yaml_section], vehicle: vehicle) }
         end
       end
 
       def generate_means_proceeding_entity(xml, sequence_no, config)
-        xml.__send__('common:SequenceNumber', sequence_no)
-        xml.__send__('common:EntityName', config[:entity_name])
+        xml.__send__(:'common:SequenceNumber', sequence_no)
+        xml.__send__(:'common:EntityName', config[:entity_name])
         proceedings.reverse_each do |proceeding|
           generate_means_proceeding_instance(xml, proceeding, config)
         end
       end
 
       def generate_means_proceeding_instance(xml, proceeding, config)
-        xml.__send__('common:Instances') do
-          xml.__send__('common:InstanceLabel', proceeding.case_p_num)
-          xml.__send__('common:Attributes') do
+        xml.__send__(:'common:Instances') do
+          xml.__send__(:'common:InstanceLabel', proceeding.case_p_num)
+          xml.__send__(:'common:Attributes') do
             EntityAttributesGenerator.call(self,
                                            xml,
                                            config[:yaml_section],
@@ -366,58 +366,58 @@ def generate_means_proceeding_instance(xml, proceeding, config)
       end
 
       def generate_entity(xml, sequence_no, config)
-        xml.__send__('common:SequenceNumber', sequence_no)
-        xml.__send__('common:EntityName', config[:entity_name])
-        xml.__send__('common:Instances') do
-          xml.__send__('common:InstanceLabel', config[:resolved_instance_label])
-          xml.__send__('common:Attributes') { EntityAttributesGenerator.call(self, xml, config[:yaml_section]) }
+        xml.__send__(:'common:SequenceNumber', sequence_no)
+        xml.__send__(:'common:EntityName', config[:entity_name])
+        xml.__send__(:'common:Instances') do
+          xml.__send__(:'common:InstanceLabel', config[:resolved_instance_label])
+          xml.__send__(:'common:Attributes') { EntityAttributesGenerator.call(self, xml, config[:yaml_section]) }
         end
       end
 
       def generate_merits_assessment(xml)
-        xml.__send__('casebio:AssesmentResults') do
-          xml.__send__('common:Results') { generate_merits_assessment_results(xml) }
-          xml.__send__('common:AssesmentDetails') { generate_merits_assessment_details(xml) }
+        xml.__send__(:'casebio:AssesmentResults') do
+          xml.__send__(:'common:Results') { generate_merits_assessment_results(xml) }
+          xml.__send__(:'common:AssesmentDetails') { generate_merits_assessment_details(xml) }
         end
       end
 
       def generate_merits_assessment_results(xml)
-        xml.__send__('common:Goal') do
-          xml.__send__('common:Attribute', 'ASSESS_COMPLETE')
-          xml.__send__('common:AttributeValue', true)
+        xml.__send__(:'common:Goal') do
+          xml.__send__(:'common:Attribute', 'ASSESS_COMPLETE')
+          xml.__send__(:'common:AttributeValue', true)
         end
       end
 
       def generate_merits_assessment_details(xml)
-        xml.__send__('common:AssessmentScreens') do
-          xml.__send__('common:ScreenName', 'SUMMARY')
-          xml.__send__('common:Entity') { generate_global_merits_entity(xml, 1) }
-          xml.__send__('common:Entity') { generate_merits_proceeding_entity(xml, 2) }
-          xml.__send__('common:Entity') { generate_opponent_other_parties_merits_entity(xml, 4) }
+        xml.__send__(:'common:AssessmentScreens') do
+          xml.__send__(:'common:ScreenName', 'SUMMARY')
+          xml.__send__(:'common:Entity') { generate_global_merits_entity(xml, 1) }
+          xml.__send__(:'common:Entity') { generate_merits_proceeding_entity(xml, 2) }
+          xml.__send__(:'common:Entity') { generate_opponent_other_parties_merits_entity(xml, 4) }
         end
       end
 
       def generate_global_merits_entity(xml, sequence_no)
-        xml.__send__('common:SequenceNumber', sequence_no)
-        xml.__send__('common:EntityName', 'global')
-        xml.__send__('common:Instances') do
-          xml.__send__('common:InstanceLabel', @submission.case_ccms_reference)
-          xml.__send__('common:Attributes') { EntityAttributesGenerator.call(self, xml, :global_merits) }
+        xml.__send__(:'common:SequenceNumber', sequence_no)
+        xml.__send__(:'common:EntityName', 'global')
+        xml.__send__(:'common:Instances') do
+          xml.__send__(:'common:InstanceLabel', @submission.case_ccms_reference)
+          xml.__send__(:'common:Attributes') { EntityAttributesGenerator.call(self, xml, :global_merits) }
         end
       end
 
       # :nocov:
       def generate_merits_proceeding_entity(xml, sequence_no)
-        xml.__send__('common:SequenceNumber', sequence_no)
-        xml.__send__('common:EntityName', 'PROCEEDING')
+        xml.__send__(:'common:SequenceNumber', sequence_no)
+        xml.__send__(:'common:EntityName', 'PROCEEDING')
         proceedings.reverse_each { |proceeding| generate_merits_proceeding_instance(xml, proceeding) }
       end
       # :nocov:
 
       def generate_merits_proceeding_instance(xml, proceeding)
-        xml.__send__('common:Instances') do
-          xml.__send__('common:InstanceLabel', proceeding.case_p_num)
-          xml.__send__('common:Attributes') do
+        xml.__send__(:'common:Instances') do
+          xml.__send__(:'common:InstanceLabel', proceeding.case_p_num)
+          xml.__send__(:'common:Attributes') do
             EntityAttributesGenerator.call(self,
                                            xml,
                                            :proceeding_merits,
@@ -429,28 +429,28 @@ def generate_merits_proceeding_instance(xml, proceeding)
       end
 
       def generate_client_residing_person_entity(xml, sequence_no, _config)
-        xml.__send__('common:SequenceNumber', sequence_no)
-        xml.__send__('common:EntityName', 'CLIENT_RESIDING_PERSON')
+        xml.__send__(:'common:SequenceNumber', sequence_no)
+        xml.__send__(:'common:EntityName', 'CLIENT_RESIDING_PERSON')
         @legal_aid_application.dependants.each_with_index { |dependant, index| generate_client_residing_person_instance(xml, dependant, index) }
       end
 
       def generate_client_residing_person_instance(xml, dependant, index)
-        xml.__send__('common:Instances') do
-          xml.__send__('common:InstanceLabel', "the client's residing person#{index + 1}")
-          xml.__send__('common:Attributes') { EntityAttributesGenerator.call(self, xml, :client_residing_person, dependant: dependant) }
+        xml.__send__(:'common:Instances') do
+          xml.__send__(:'common:InstanceLabel', "the client's residing person#{index + 1}")
+          xml.__send__(:'common:Attributes') { EntityAttributesGenerator.call(self, xml, :client_residing_person, dependant: dependant) }
         end
       end
 
       def generate_opponent_other_parties_merits_entity(xml, sequence_no)
-        xml.__send__('common:SequenceNumber', sequence_no)
-        xml.__send__('common:EntityName', 'OPPONENT_OTHER_PARTIES')
+        xml.__send__(:'common:SequenceNumber', sequence_no)
+        xml.__send__(:'common:EntityName', 'OPPONENT_OTHER_PARTIES')
         other_parties.each { |other_party| generate_opponent_other_parties_instance_merits(xml, other_party) }
       end
 
       def generate_opponent_other_parties_instance_merits(xml, other_party)
-        xml.__send__('common:Instances') do
-          xml.__send__('common:InstanceLabel', "OPPONENT_#{other_party.generate_ccms_opponent_id}")
-          xml.__send__('common:Attributes') do
+        xml.__send__(:'common:Instances') do
+          xml.__send__(:'common:InstanceLabel', "OPPONENT_#{other_party.generate_ccms_opponent_id}")
+          xml.__send__(:'common:Attributes') do
             EntityAttributesGenerator.call(self, xml, :opponent_other_parties_merits, other_party: other_party)
           end
         end
diff --git a/app/services/ccms/requestors/case_add_status_requestor.rb b/app/services/ccms/requestors/case_add_status_requestor.rb
index 3d2c4b4800..1f86c3c277 100644
--- a/app/services/ccms/requestors/case_add_status_requestor.rb
+++ b/app/services/ccms/requestors/case_add_status_requestor.rb
@@ -22,9 +22,9 @@ def request_xml
       end
 
       def soap_body(xml)
-        xml.__send__('casebim:CaseAddUpdtStatusRQ') do
-          xml.__send__('hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
-          xml.__send__('casebim:TransactionID', case_add_transaction_id)
+        xml.__send__(:'casebim:CaseAddUpdtStatusRQ') do
+          xml.__send__(:'hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
+          xml.__send__(:'casebim:TransactionID', case_add_transaction_id)
         end
       end
     end
diff --git a/app/services/ccms/requestors/document_id_requestor.rb b/app/services/ccms/requestors/document_id_requestor.rb
index 3738a4116c..dc4946771b 100644
--- a/app/services/ccms/requestors/document_id_requestor.rb
+++ b/app/services/ccms/requestors/document_id_requestor.rb
@@ -23,24 +23,24 @@ def request_xml
       end
 
       def soap_body(xml)
-        xml.__send__('casebim:DocumentUploadRQ') do
-          xml.__send__('hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
-          xml.__send__('casebim:NotificationID', -1)
-          xml.__send__('casebim:CaseReferenceNumber', case_ccms_reference)
-          xml.__send__('casebim:Document') { document_type(xml) }
+        xml.__send__(:'casebim:DocumentUploadRQ') do
+          xml.__send__(:'hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
+          xml.__send__(:'casebim:NotificationID', -1)
+          xml.__send__(:'casebim:CaseReferenceNumber', case_ccms_reference)
+          xml.__send__(:'casebim:Document') { document_type(xml) }
         end
       end
 
       def document_type(xml)
         case @document_type
         when 'bank_transaction_report'
-          xml.__send__('casebio:DocumentType', 'BSTMT')
+          xml.__send__(:'casebio:DocumentType', 'BSTMT')
         when 'gateway_evidence_pdf'
-          xml.__send__('casebio:DocumentType', 'STATE')
+          xml.__send__(:'casebio:DocumentType', 'STATE')
         else
-          xml.__send__('casebio:DocumentType', 'ADMIN1')
+          xml.__send__(:'casebio:DocumentType', 'ADMIN1')
         end
-        xml.__send__('casebio:Channel', 'E')
+        xml.__send__(:'casebio:Channel', 'E')
       end
     end
   end
diff --git a/app/services/ccms/requestors/document_upload_requestor.rb b/app/services/ccms/requestors/document_upload_requestor.rb
index 00c434524a..ee1fb1fba6 100644
--- a/app/services/ccms/requestors/document_upload_requestor.rb
+++ b/app/services/ccms/requestors/document_upload_requestor.rb
@@ -25,32 +25,32 @@ def request_xml
       end
 
       def soap_body(xml)
-        xml.__send__('casebim:DocumentUploadRQ') do
-          xml.__send__('hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
-          xml.__send__('casebim:NotificationID', -1)
-          xml.__send__('casebim:CaseReferenceNumber', case_ccms_reference)
-          xml.__send__('casebim:Document') { document(xml) }
+        xml.__send__(:'casebim:DocumentUploadRQ') do
+          xml.__send__(:'hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
+          xml.__send__(:'casebim:NotificationID', -1)
+          xml.__send__(:'casebim:CaseReferenceNumber', case_ccms_reference)
+          xml.__send__(:'casebim:Document') { document(xml) }
         end
       end
 
       def document(xml)
-        xml.__send__('casebio:CCMSDocumentID', ccms_document_id)
+        xml.__send__(:'casebio:CCMSDocumentID', ccms_document_id)
         document_type(xml)
-        xml.__send__('casebio:Channel', 'E')
-        xml.__send__('casebio:BinData', document_encoded_base64)
+        xml.__send__(:'casebio:Channel', 'E')
+        xml.__send__(:'casebio:BinData', document_encoded_base64)
       end
 
       def document_type(xml)
         case @document_type
         when 'bank_transaction_report'
-          xml.__send__('casebio:DocumentType', 'BSTMT')
-          xml.__send__('casebio:FileExtension', 'csv')
+          xml.__send__(:'casebio:DocumentType', 'BSTMT')
+          xml.__send__(:'casebio:FileExtension', 'csv')
         when 'gateway_evidence_pdf'
-          xml.__send__('casebio:DocumentType', 'STATE')
-          xml.__send__('casebio:FileExtension', 'pdf')
+          xml.__send__(:'casebio:DocumentType', 'STATE')
+          xml.__send__(:'casebio:FileExtension', 'pdf')
         else
-          xml.__send__('casebio:DocumentType', 'ADMIN1')
-          xml.__send__('casebio:FileExtension', 'pdf')
+          xml.__send__(:'casebio:DocumentType', 'ADMIN1')
+          xml.__send__(:'casebio:FileExtension', 'pdf')
         end
       end
     end
diff --git a/app/services/ccms/requestors/reference_data_requestor.rb b/app/services/ccms/requestors/reference_data_requestor.rb
index e6336b230c..78ae53cca9 100644
--- a/app/services/ccms/requestors/reference_data_requestor.rb
+++ b/app/services/ccms/requestors/reference_data_requestor.rb
@@ -19,16 +19,16 @@ def request_xml
       private
 
       def soap_body(xml)
-        xml.__send__('refdatabim:ReferenceDataInqRQ') do
-          xml.__send__('hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
-          xml.__send__('refdatabim:SearchCriteria') { search_criteria(xml) }
+        xml.__send__(:'refdatabim:ReferenceDataInqRQ') do
+          xml.__send__(:'hdr:HeaderRQ') { ns3_header_rq(xml, @provider_username) }
+          xml.__send__(:'refdatabim:SearchCriteria') { search_criteria(xml) }
         end
       end
 
       def search_criteria(xml)
-        xml.__send__('refdatabio:ContextKey', 'CaseReferenceNumber')
-        xml.__send__('refdatabio:SearchKey') do
-          xml.__send__('refdatabio:Key', 'CaseReferenceNumber')
+        xml.__send__(:'refdatabio:ContextKey', 'CaseReferenceNumber')
+        xml.__send__(:'refdatabio:SearchKey') do
+          xml.__send__(:'refdatabio:Key', 'CaseReferenceNumber')
         end
       end
     end
diff --git a/spec/support/back_link_matcher.rb b/spec/support/back_link_matcher.rb
index 63d3c693da..b3cd7194f9 100644
--- a/spec/support/back_link_matcher.rb
+++ b/spec/support/back_link_matcher.rb
@@ -14,7 +14,7 @@
 
   def extract_back_link(html)
     atag = parsed_response_body(html).css('a.govuk-back-link').first
-    atag.nil? ? nil : atag.attr('href')
+    atag.nil? ? nil : atag.attr(:href)
   end
 
   # URLs match if content same even if order of query part is diferent
diff --git a/spec/support/common_methods.rb b/spec/support/common_methods.rb
index 36db9f5b3d..91000dbd15 100644
--- a/spec/support/common_methods.rb
+++ b/spec/support/common_methods.rb
@@ -3,7 +3,7 @@ def parsed_response_body(html = response.body)
 end
 
 def button_value(html_body:, attr:)
-  parsed_response_body(html_body).css(attr)[0].attr('value')
+  parsed_response_body(html_body).css(attr)[0].attr(:value)
 end
 
 def save_xml_in_temp_file(_xml)