diff --git a/.github/workflows/push-collection-to-postman.yml b/.github/workflows/push-collection-to-postman.yml
index 0330251e..36d9039d 100644
--- a/.github/workflows/push-collection-to-postman.yml
+++ b/.github/workflows/push-collection-to-postman.yml
@@ -1,45 +1,90 @@
-name: Push collection to Postman workspace
+name: Push Postman collection changes to public collection
+# This workflow pushes any changes to the Postman collections in the repo to the Postman collections within the
+# Validated Relationships Service workspace.
+# This means that all changes and version control are handled within GitHub for the collections and only once the
+# changes have been merged are the public-facing Postman collections updated.
+# Please see updated instructions on Confluence for further details about how this workflow fits into that process.
 on:
     workflow_dispatch:
         inputs:
-            collection:
-                type: choice
-                description: Collection to push
-                options:
-                    - sandbox
-                    - integration
-                required: true
-                default: sandbox
-
-    workflow_call:
-        inputs:
-            collection:
-                type: string
-                description: Collection to push
-                required: true
+            should_push_sandbox:
+                type: boolean
+                description: Push Sandbox collection
+                default: false
+            should_push_integration:
+                type: boolean
+                description: Push Integration collection
+                default: false
+    push:
+        branches:
+            - master
+        paths:
+            - './postman/validated_relationship_service.**'
 
 jobs:
-    push-to-postman:
-        name: Push collection to Postman
+    detect-changes:
+        name: Detect which Postman collection has changed
+        runs-on: ubuntu-latest
+        if: ${{ github.event_name == 'push' }}
+        outputs:
+            sandbox: ${{ steps.filter.outputs.sandbox }}
+            integration: ${{ steps.filter.outputs.integration }}
+        steps:
+            -   name: Checkout
+                uses: actions/checkout@v5
+                with:
+                    fetch-depth: 0
+            -   uses: dorny/paths-filter@v3
+                id: filter
+                with:
+                    filters: |
+                        sandbox:
+                            - './postman/validated_relationship_service.sandbox.postman_collection.json'
+                        integration:
+                            - './postman/validated_relationship_service.integration.postman_collection.json'
+
+    push-sandbox-postman:
+        name: Push Sandbox collection to Postman
         runs-on: ubuntu-latest
+        needs: [detect-changes]
+        if: |
+            always () && (
+                (github.event_name == 'push' && needs.detect-changes.outputs.sandbox == 'true') ||
+                (github.event_name == 'workflow_dispatch' && github.event.inputs.should_push_sandbox == 'true')
+            )
         steps:
             -   name: Checkout
                 uses: actions/checkout@v5
                 with:
                     fetch-depth: 0
-            -   name: Get collection ID
-                id: get_collection_id
-                run: |
-                    if [[ '${{ github.event.inputs.collection }}' == 'sandbox' ]]; then
-                        echo 'collection_id=${{ secrets.POSTMAN_SANDBOX_COLLECTION_ID }}' >> $GITHUB_OUTPUT
-                    else
-                        echo 'collection_id=${{ secrets.POSTMAN_INTEGRATION_COLLECTION_ID }}' >> $GITHUB_OUTPUT
-                    fi
-            - name: push-to-postman-action
-              id: process
+            - name: Push Sandbox Postman collection
+              id: push_sandbox_postman_collection
               uses: gcatanese/push-to-postman-action@main
               with:
                 goal: update
                 postman-key: ${{ secrets.POSTMAN_API_KEY }}
-                postman-file: '/postman/validated_relationship_service.${{ github.event.inputs.collection }}.postman_collection.json'
-                collection-id: ${{ steps.get_collection_id.outputs.collectionId }}
+                postman-file: './postman/validated_relationship_service.sandbox.postman_collection.json'
+                collection-id: ${{ secrets.POSTMAN_SANDBOX_COLLECTION_ID }}
+
+    push-integration-postman:
+        name: Push Integration collection to Postman
+        runs-on: ubuntu-latest
+        needs: [detect-changes]
+        if: |
+            always () && (
+                (github.event_name == 'push' && needs.detect-changes.outputs.integration == 'true') ||
+                (github.event_name == 'workflow_dispatch' && github.event.inputs.should_push_integration == 'true')
+            )
+        steps:
+            -   name: Checkout
+                uses: actions/checkout@v5
+                with:
+                    fetch-depth: 0
+            -   name: Push Integration Postman collection
+                id: push_integration_postman_collection
+                uses: gcatanese/push-to-postman-action@main
+                with:
+                    goal: update
+                    postman-key: ${{ secrets.POSTMAN_API_KEY }}
+                    postman-file: './postman/validated_relationship_service.integration.postman_collection.json'
+                    collection-id: ${{ secrets.POSTMAN_INTEGRATION_COLLECTION_ID }}
diff --git a/postman/validated_relationship_service.sandbox.postman_collection.json b/postman/validated_relationship_service.sandbox.postman_collection.json
index 00116c35..a45bb35b 100644
--- a/postman/validated_relationship_service.sandbox.postman_collection.json
+++ b/postman/validated_relationship_service.sandbox.postman_collection.json
@@ -11052,11 +11052,6 @@
 		{
 			"key": "api_base_url",
 			"value": "https://sandbox.api.service.nhs.uk/validated-relationships/FHIR/R4"
-		},
-		{
-			"value": "",
-			"type": "string",
-			"disabled": true
 		}
 	]
-}
\ No newline at end of file
+}