diff --git a/.github/workflows/aws_deploy.yml b/.github/workflows/aws_deploy.yml
index 0e82e576b..9bd78ea3e 100644
--- a/.github/workflows/aws_deploy.yml
+++ b/.github/workflows/aws_deploy.yml
@@ -22,6 +22,10 @@ on:
       release_tag:
         required: false
         type: string
+      ref:
+        required: false
+        type: string
+        default: ""
 
 concurrency:
   group: deploy-${{ inputs.environment }}${{ inputs.concurrency_tag }}
@@ -42,6 +46,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.ref || github.sha }}
 
       - name: Configure AWS credentials
         uses: aws-actions/configure-aws-credentials@v4
@@ -53,16 +59,19 @@ jobs:
         id: ecr-login
         uses: aws-actions/amazon-ecr-login@v2
 
+      - name: Resolve commit SHA
+        run: echo "commit_sha=${{ inputs.ref || github.sha }}" >> $GITHUB_ENV
+
       - name: Check if image with tag already exists
         run: |
-          echo "image-exists=$(if aws ecr describe-images --repository-name=$repository --image-ids imageTag=${{ github.sha }} > /dev/null 2>&1; then echo true; else echo false; fi)" >> $GITHUB_ENV
+          echo "image-exists=$(if aws ecr describe-images --repository-name=$repository --image-ids imageTag=${{ env.commit_sha }} > /dev/null 2>&1; then echo true; else echo false; fi)" >> $GITHUB_ENV
 
       - name: Build, tag, and push docker image to ECR if there is no image, failing for releases
         id: build-image
         if: ${{ env.image-exists == 'false' }}
         env:
           registry: ${{ steps.ecr-login.outputs.registry }}
-          commit_tag: ${{ github.sha }}
+          commit_tag: ${{ env.commit_sha }}
         run: |
           if [[ ${{ inputs.environment }} == 'production' ]]; then
             echo "Error: Deployment to production environment is not allowed as there is no docker image (i.e. the AWS deploy on staging was unsuccessful for this commit)."
@@ -100,7 +109,7 @@ jobs:
         id: update-image-tags
         env:
           registry: ${{ steps.ecr-login.outputs.registry }}
-          commit_tag: ${{ github.sha }}
+          commit_tag: ${{ inputs.ref || github.sha }}
           readable_tag: ${{ inputs.environment }}-${{ env.additional-tag }}
         run: |
           manifest=$(aws ecr batch-get-image --repository-name $repository --image-ids imageTag=$commit_tag --output text --query images[].imageManifest)
diff --git a/.github/workflows/manual_review_code_pipeline.yml b/.github/workflows/manual_review_code_pipeline.yml
index 2ea0719ca..561c06b76 100644
--- a/.github/workflows/manual_review_code_pipeline.yml
+++ b/.github/workflows/manual_review_code_pipeline.yml
@@ -1,15 +1,15 @@
-name: Manual review app code pipeline
+name: Manual review app build and deploy
 
 concurrency:
-  group: review-${{ inputs.review_app_key }}
+  group: deploy-review${{ inputs.pr_number }}
 
 on:
   workflow_dispatch:
     inputs:
-      review_app_key:
+      pr_number:
         required: true
         type: string
-        description: "The review app ID to deploy code for."
+        description: "The PR number of the review app to deploy code for. Note: this is NOT the ticket number"
 
 defaults:
   run:
@@ -22,8 +22,8 @@ jobs:
     with:
       aws_account_id: 837698168072
       aws_role_prefix: core-dev
-      aws_task_prefix: core-review-${{ inputs.review_app_key }}
-      concurrency_tag: ${{ inputs.review_app_key }}
+      aws_task_prefix: core-review-${{ inputs.pr_number }}
+      concurrency_tag: ${{ inputs.pr_number }}
       environment: review
     permissions:
       id-token: write
diff --git a/.github/workflows/review_pipeline.yml b/.github/workflows/review_pipeline.yml
index 307aa0381..cfc79f9f3 100644
--- a/.github/workflows/review_pipeline.yml
+++ b/.github/workflows/review_pipeline.yml
@@ -9,30 +9,91 @@ on:
         required: true
         type: string
         description: "The number of the PR for which to deploy a review app. Note: this is NOT the ticket number"
+  pull_request:
+    types: [synchronize]
+
+concurrency:
+  group: deploy-review${{ github.event.pull_request.number || inputs.pr_number || github.event.issue.number }}
 
 permissions: {}
 
 jobs:
   get_pr_details:
     name: Get PR details
-    if: github.event_name == 'workflow_dispatch' || (github.event.issue.pull_request && startsWith(github.event.comment.body, '/deploy-review'))
+    if: github.event_name == 'workflow_dispatch' || (github.event.issue.pull_request && startsWith(github.event.comment.body, '/deploy-review')) || github.event_name == 'pull_request'
     runs-on: ubuntu-latest
     outputs:
       pr_number: ${{ steps.get_pr_details.outputs.pr_number }}
+      pr_head_sha: ${{ steps.get_pr_details.outputs.pr_head_sha }}
     steps:
-      - name: Get PR number
+      - name: Get PR number and HEAD SHA
         id: get_pr_details
         uses: actions/github-script@v7
         with:
           script: |
+            let prNumber;
             if (context.eventName === 'workflow_dispatch') {
-              core.setOutput('pr_number', '${{ inputs.pr_number }}');
+              prNumber = '${{ inputs.pr_number }}';
+            } else if (context.eventName === 'pull_request') {
+              prNumber = context.payload.pull_request.number.toString();
             } else {
-              core.setOutput('pr_number', context.issue.number.toString());
+              prNumber = context.issue.number.toString();
             }
+            core.setOutput('pr_number', prNumber);
+            const { data: pr } = await github.rest.pulls.get({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: parseInt(prNumber),
+            });
+            core.setOutput('pr_head_sha', pr.head.sha);
+
+  check_review_app_exists:
+    name: Check if review app exists
+    if: github.event_name == 'pull_request'
+    needs: [get_pr_details]
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+    outputs:
+      exists: ${{ steps.check.outputs.exists }}
+    steps:
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          aws-region: eu-west-2
+          role-to-assume: arn:aws:iam::837698168072:role/core-dev-deployment
+
+      - name: Check if ECS service exists
+        id: check
+        run: |
+          if aws ecs describe-services --cluster core-review-${{ needs.get_pr_details.outputs.pr_number }}-app --services core-review-${{ needs.get_pr_details.outputs.pr_number }}-app --query "services[?status=='ACTIVE']" | grep -q 'serviceName'; then
+            echo "exists=true" >> $GITHUB_OUTPUT
+          else
+            echo "exists=false" >> $GITHUB_OUTPUT
+          fi
+
+  deployment_started_comment:
+    name: Comment deployment started
+    if: github.event_name != 'pull_request'
+    needs: [get_pr_details]
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+      - name: Comment on PR
+        uses: actions/github-script@v7
+        with:
+          script: |
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: ${{ needs.get_pr_details.outputs.pr_number }},
+              body: 'Starting review app deployment...',
+            });
 
   infra:
     name: Deploy review app infrastructure
+    if: github.event_name != 'pull_request'
     needs: [get_pr_details]
     uses: communitiesuk/submit-social-housing-lettings-and-sales-data-infrastructure/.github/workflows/create_review_app_infra.yml@main
     with:
@@ -43,6 +104,7 @@ jobs:
 
   code:
     name: Deploy review app code
+    if: github.event_name != 'pull_request'
     needs: [get_pr_details, infra]
     uses: ./.github/workflows/aws_deploy.yml
     with:
@@ -51,11 +113,28 @@ jobs:
       aws_task_prefix: core-review-${{ needs.get_pr_details.outputs.pr_number }}
       concurrency_tag: ${{ needs.get_pr_details.outputs.pr_number }}
       environment: review
+      ref: ${{ needs.get_pr_details.outputs.pr_head_sha }}
+    permissions:
+      id-token: write
+
+  auto_update_code:
+    name: Auto-update review app code
+    if: github.event_name == 'pull_request' && needs.check_review_app_exists.outputs.exists == 'true'
+    needs: [get_pr_details, check_review_app_exists]
+    uses: ./.github/workflows/aws_deploy.yml
+    with:
+      aws_account_id: 837698168072
+      aws_role_prefix: core-dev
+      aws_task_prefix: core-review-${{ needs.get_pr_details.outputs.pr_number }}
+      concurrency_tag: ${{ needs.get_pr_details.outputs.pr_number }}
+      environment: review
+      ref: ${{ needs.get_pr_details.outputs.pr_head_sha }}
     permissions:
       id-token: write
 
   comment:
     name: Add link to PR
+    if: github.event_name != 'pull_request'
     needs: [get_pr_details, code]
     runs-on: ubuntu-latest
     permissions:
diff --git a/.github/workflows/review_teardown_pipeline.yml b/.github/workflows/review_teardown_pipeline.yml
index 8925b3340..dad9a0e8c 100644
--- a/.github/workflows/review_teardown_pipeline.yml
+++ b/.github/workflows/review_teardown_pipeline.yml
@@ -1,27 +1,83 @@
 name: Review app teardown pipeline
 
 concurrency:
-  group: review-${{ github.event.pull_request.number }}
+  group: deploy-review${{ github.event.pull_request.number || inputs.pr_number }}
 
 on:
   pull_request:
     types:
       - closed
   workflow_dispatch:
+    inputs:
+      pr_number:
+        required: true
+        type: string
+        description: "The PR number of the review app to tear down. Note: this is NOT the ticket number"
 
 env:
   app_repo_role: arn:aws:iam::815624722760:role/core-application-repo
   aws_account_id: 837698168072
   aws_region: eu-west-2
   aws_role_prefix: core-dev
-  aws_task_prefix: core-review-${{ github.event.pull_request.number }}
 
 jobs:
+  get_pr_number:
+    name: Get PR number
+    runs-on: ubuntu-latest
+    outputs:
+      pr_number: ${{ steps.get.outputs.pr_number }}
+    steps:
+      - name: Get PR number
+        id: get
+        run: |
+          if [ "${{ github.event_name }}" == "workflow_dispatch" ]; then
+            echo "pr_number=${{ inputs.pr_number }}" >> $GITHUB_OUTPUT
+          else
+            echo "pr_number=${{ github.event.pull_request.number }}" >> $GITHUB_OUTPUT
+          fi
+
+  check_review_app_exists:
+    name: Check if review app exists
+    needs: [get_pr_number]
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+    outputs:
+      exists: ${{ steps.check.outputs.exists }}
+    steps:
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          aws-region: ${{ env.aws_region }}
+          role-to-assume: ${{ env.app_repo_role }}
+
+      - name: Configure AWS credentials for review environment
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          aws-region: ${{ env.aws_region }}
+          role-to-assume: arn:aws:iam::${{ env.aws_account_id }}:role/${{ env.aws_role_prefix }}-deployment
+          role-chaining: true
+
+      - name: Check if ECS service exists
+        id: check
+        env:
+          aws_task_prefix: core-review-${{ needs.get_pr_number.outputs.pr_number }}
+        run: |
+          if aws ecs describe-services --cluster ${{ env.aws_task_prefix }}-app --services ${{ env.aws_task_prefix }}-app --query "services[?status=='ACTIVE']" | grep -q 'serviceName'; then
+            echo "exists=true" >> $GITHUB_OUTPUT
+          else
+            echo "exists=false" >> $GITHUB_OUTPUT
+          fi
+
   database:
     name: Drop database
+    if: needs.check_review_app_exists.outputs.exists == 'true'
+    needs: [get_pr_number, check_review_app_exists]
     runs-on: ubuntu-latest
     permissions:
       id-token: write
+    env:
+      aws_task_prefix: core-review-${{ needs.get_pr_number.outputs.pr_number }}
 
     steps:
       - name: Configure AWS credentials
@@ -55,10 +111,11 @@ jobs:
 
   infra:
     name: Teardown review app
-    needs: [database]
+    if: needs.check_review_app_exists.outputs.exists == 'true'
+    needs: [get_pr_number, check_review_app_exists, database]
     uses: communitiesuk/submit-social-housing-lettings-and-sales-data-infrastructure/.github/workflows/destroy_review_app_infra.yml@main
     with:
-      key: ${{ github.event.pull_request.number }}
+      key: ${{ needs.get_pr_number.outputs.pr_number }}
       app_repo_role: arn:aws:iam::815624722760:role/core-application-repo
     permissions:
       id-token: write