diff --git a/config/schema/elasticsearch_types/ai_assurance_portfolio_technique.json b/config/schema/elasticsearch_types/ai_assurance_portfolio_technique.json
index 65f05e729..9a7c67b85 100644
--- a/config/schema/elasticsearch_types/ai_assurance_portfolio_technique.json
+++ b/config/schema/elasticsearch_types/ai_assurance_portfolio_technique.json
@@ -5,7 +5,8 @@
     "principle",
     "key_function",
     "ai_assurance_technique",
-    "assurance_technique_approach"
+    "assurance_technique_approach",
+    "focus_sector"
   ],
   "expanded_search_result_fields": {
     "use_case": [
@@ -243,6 +244,12 @@
         "label": "Educational",
         "value": "educational"
       }
+    ],
+    "focus_sector": [
+      {
+        "label": "Financial Services",
+        "value": "financial-services"
+      }
     ]
   }
 }
diff --git a/config/schema/field_definitions.json b/config/schema/field_definitions.json
index c86ee0b1f..8f7212e87 100644
--- a/config/schema/field_definitions.json
+++ b/config/schema/field_definitions.json
@@ -1040,6 +1040,9 @@
   "assurance_technique_approach": {
     "type": "identifiers"
   },
+  "focus_sector": {
+    "type": "identifiers"
+  },
 
   "algorithmic_transparency_record_organisation": {
     "description": "The organisation that published the record",
diff --git a/lib/govuk_index/presenters/elasticsearch_presenter.rb b/lib/govuk_index/presenters/elasticsearch_presenter.rb
index 420830377..491451a4e 100644
--- a/lib/govuk_index/presenters/elasticsearch_presenter.rb
+++ b/lib/govuk_index/presenters/elasticsearch_presenter.rb
@@ -73,6 +73,7 @@ def document
         email_document_supertype: common_fields.email_document_supertype,
         first_published_at: specialist.first_published_at,
         flood_and_coastal_erosion_category: specialist.flood_and_coastal_erosion_category,
+        focus_sector: specialist.focus_sector,
         format: common_fields.format,
         fund_state: specialist.fund_state,
         fund_type: specialist.fund_type,
diff --git a/lib/govuk_index/presenters/specialist_presenter.rb b/lib/govuk_index/presenters/specialist_presenter.rb
index cb3b865eb..cefab8714 100644
--- a/lib/govuk_index/presenters/specialist_presenter.rb
+++ b/lib/govuk_index/presenters/specialist_presenter.rb
@@ -54,6 +54,7 @@ class SpecialistPresenter
     delegate_to_payload :disease_type, convert_to_array: true
     delegate_to_payload :eligible_entities
     delegate_to_payload :flood_and_coastal_erosion_category
+    delegate_to_payload :focus_sector, convert_to_array: true
     delegate_to_payload :fund_state, convert_to_array: true
     delegate_to_payload :fund_type
     delegate_to_payload :funding_amount