diff --git a/app/controllers/content_items_controller.rb b/app/controllers/content_items_controller.rb
index 7d62d34bc..89a3bbd8d 100644
--- a/app/controllers/content_items_controller.rb
+++ b/app/controllers/content_items_controller.rb
@@ -24,6 +24,7 @@ class ContentItemsController < ApplicationController
   def show
     load_content_item
 
+    temporary_ab_test_find_utr_page
     set_expiry
 
     if is_service_manual?
@@ -266,4 +267,31 @@ def csp_connect_src
 
     @content_item.csp_connect_src
   end
+
+  # TEMPORARY (author: richard.towers, expected end date: February 2024)
+  # Content specific AB test for the Find your UTR number page
+  def temporary_ab_test_find_utr_page
+    placeholder = "{{ab_test_find_utr_number_video_links}}"
+    if @content_item.base_path == "/find-utr-number" && @content_item.body.include?(placeholder)
+      ab_test = GovukAbTesting::AbTest.new(
+        "find_utr_number_video_links",
+        dimension: 61, # https://docs.google.com/spreadsheets/d/1h4vGXzIbhOWwUzourPLIc8WM-iU1b6WYOVDOZxmU1Uo/edit#gid=254065189&range=69:69
+        allowed_variants: %w[A B Z],
+        control_variant: "Z",
+      )
+      @requested_variant = ab_test.requested_variant(request.headers)
+      @requested_variant.configure_response(response)
+
+      replacement = case @requested_variant.variant_name
+                    when "A"
+                      I18n.t("ab_tests.find_utr_number_video_links.A")
+                    when "B"
+                      I18n.t("ab_tests.find_utr_number_video_links.B")
+                    else
+                      I18n.t("ab_tests.find_utr_number_video_links.Z")
+                    end
+      @content_item.body.sub!(placeholder, replacement)
+    end
+  end
+  # /TEMPORARY
 end
diff --git a/config/locales/ar.yml b/config/locales/ar.yml
index e01ee055a..7c838eb7d 100644
--- a/config/locales/ar.yml
+++ b/config/locales/ar.yml
@@ -1,5 +1,10 @@
 ---
 ar:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/az.yml b/config/locales/az.yml
index e34b33c24..0b88dd624 100644
--- a/config/locales/az.yml
+++ b/config/locales/az.yml
@@ -1,5 +1,10 @@
 ---
 az:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/be.yml b/config/locales/be.yml
index 1fc673b06..cd8ee3afc 100644
--- a/config/locales/be.yml
+++ b/config/locales/be.yml
@@ -1,5 +1,10 @@
 ---
 be:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/bg.yml b/config/locales/bg.yml
index d3eee4dea..287e23e86 100644
--- a/config/locales/bg.yml
+++ b/config/locales/bg.yml
@@ -1,5 +1,10 @@
 ---
 bg:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/bn.yml b/config/locales/bn.yml
index d178e4d4c..ac03575a2 100644
--- a/config/locales/bn.yml
+++ b/config/locales/bn.yml
@@ -1,5 +1,10 @@
 ---
 bn:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/cs.yml b/config/locales/cs.yml
index c98c29d7a..24bef50f8 100644
--- a/config/locales/cs.yml
+++ b/config/locales/cs.yml
@@ -1,5 +1,10 @@
 ---
 cs:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/cy.yml b/config/locales/cy.yml
index 4c52f9f36..97c5c19ec 100644
--- a/config/locales/cy.yml
+++ b/config/locales/cy.yml
@@ -1,5 +1,10 @@
 ---
 cy:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/da.yml b/config/locales/da.yml
index 6fc4b02b1..52b0a18e1 100644
--- a/config/locales/da.yml
+++ b/config/locales/da.yml
@@ -1,5 +1,10 @@
 ---
 da:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/de.yml b/config/locales/de.yml
index 26bd40295..5a2a2e912 100644
--- a/config/locales/de.yml
+++ b/config/locales/de.yml
@@ -1,5 +1,10 @@
 ---
 de:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/dr.yml b/config/locales/dr.yml
index 8dcc83183..49f5621a1 100644
--- a/config/locales/dr.yml
+++ b/config/locales/dr.yml
@@ -1,5 +1,10 @@
 ---
 dr:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/el.yml b/config/locales/el.yml
index 5352cabe4..5a37ebf68 100644
--- a/config/locales/el.yml
+++ b/config/locales/el.yml
@@ -1,5 +1,10 @@
 ---
 el:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 465ebc43c..6103d76c3 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -1,5 +1,10 @@
 ---
 en:
+  ab_tests:
+    find_utr_number_video_links:
+      A: 'in the <a href="/guidance/download-the-hmrc-app"><abbr title="HM Revenue and Customs">HMRC</abbr> app</a>'
+      B: 'in the <abbr title="HM Revenue and Customs">HMRC</abbr> app - watch a <a href="https://www.youtube.com/watch?v=LXw9ily9rTo">video about finding your UTR number in the app</a>'
+      Z: 'in the <a href="/guidance/download-the-hmrc-app"><abbr title="HM Revenue and Customs">HMRC</abbr> app</a>'
   call_for_evidence:
     and: and
     another_website_html: This call for evidence %{closed} held on <a href="%{url}">another website</a>
diff --git a/config/locales/es-419.yml b/config/locales/es-419.yml
index 01d78b6d4..69c602719 100644
--- a/config/locales/es-419.yml
+++ b/config/locales/es-419.yml
@@ -1,5 +1,10 @@
 ---
 es-419:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/es.yml b/config/locales/es.yml
index 58b162b6a..e2824ca18 100644
--- a/config/locales/es.yml
+++ b/config/locales/es.yml
@@ -1,5 +1,10 @@
 ---
 es:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/et.yml b/config/locales/et.yml
index b8cdd3648..b44cd316b 100644
--- a/config/locales/et.yml
+++ b/config/locales/et.yml
@@ -1,5 +1,10 @@
 ---
 et:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/fa.yml b/config/locales/fa.yml
index b0ff66628..68eef2ed2 100644
--- a/config/locales/fa.yml
+++ b/config/locales/fa.yml
@@ -1,5 +1,10 @@
 ---
 fa:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/fi.yml b/config/locales/fi.yml
index 16bd0b181..e127856b8 100644
--- a/config/locales/fi.yml
+++ b/config/locales/fi.yml
@@ -1,5 +1,10 @@
 ---
 fi:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/fr.yml b/config/locales/fr.yml
index 5268aafe2..d5a583a08 100644
--- a/config/locales/fr.yml
+++ b/config/locales/fr.yml
@@ -1,5 +1,10 @@
 ---
 fr:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/gd.yml b/config/locales/gd.yml
index ce2718889..dfb549b8c 100644
--- a/config/locales/gd.yml
+++ b/config/locales/gd.yml
@@ -1,5 +1,10 @@
 ---
 gd:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/gu.yml b/config/locales/gu.yml
index a283cc976..d46221546 100644
--- a/config/locales/gu.yml
+++ b/config/locales/gu.yml
@@ -1,5 +1,10 @@
 ---
 gu:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/he.yml b/config/locales/he.yml
index 36e0f4efd..dc81eb52e 100644
--- a/config/locales/he.yml
+++ b/config/locales/he.yml
@@ -1,5 +1,10 @@
 ---
 he:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/hi.yml b/config/locales/hi.yml
index beb490694..7a93b13e5 100644
--- a/config/locales/hi.yml
+++ b/config/locales/hi.yml
@@ -1,5 +1,10 @@
 ---
 hi:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/hr.yml b/config/locales/hr.yml
index 299cd94da..bae61eb7e 100644
--- a/config/locales/hr.yml
+++ b/config/locales/hr.yml
@@ -1,5 +1,10 @@
 ---
 hr:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/hu.yml b/config/locales/hu.yml
index ce0f43007..94d762966 100644
--- a/config/locales/hu.yml
+++ b/config/locales/hu.yml
@@ -1,5 +1,10 @@
 ---
 hu:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/hy.yml b/config/locales/hy.yml
index 1a104fd8a..b50506156 100644
--- a/config/locales/hy.yml
+++ b/config/locales/hy.yml
@@ -1,5 +1,10 @@
 ---
 hy:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/id.yml b/config/locales/id.yml
index 3af0fedd7..5e295d88b 100644
--- a/config/locales/id.yml
+++ b/config/locales/id.yml
@@ -1,5 +1,10 @@
 ---
 id:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/is.yml b/config/locales/is.yml
index 488139770..e14321709 100644
--- a/config/locales/is.yml
+++ b/config/locales/is.yml
@@ -1,5 +1,10 @@
 ---
 is:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/it.yml b/config/locales/it.yml
index 24945c46d..b07a89484 100644
--- a/config/locales/it.yml
+++ b/config/locales/it.yml
@@ -1,5 +1,10 @@
 ---
 it:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/ja.yml b/config/locales/ja.yml
index f9f633d72..b7bc6ba7b 100644
--- a/config/locales/ja.yml
+++ b/config/locales/ja.yml
@@ -1,5 +1,10 @@
 ---
 ja:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/ka.yml b/config/locales/ka.yml
index 19c62e887..67928a371 100644
--- a/config/locales/ka.yml
+++ b/config/locales/ka.yml
@@ -1,5 +1,10 @@
 ---
 ka:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/kk.yml b/config/locales/kk.yml
index 37b29e339..22d4c3fa2 100644
--- a/config/locales/kk.yml
+++ b/config/locales/kk.yml
@@ -1,5 +1,10 @@
 ---
 kk:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/ko.yml b/config/locales/ko.yml
index bb372ca5a..8d02f1dc0 100644
--- a/config/locales/ko.yml
+++ b/config/locales/ko.yml
@@ -1,5 +1,10 @@
 ---
 ko:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/lt.yml b/config/locales/lt.yml
index 2e0d9be78..0991d30a6 100644
--- a/config/locales/lt.yml
+++ b/config/locales/lt.yml
@@ -1,5 +1,10 @@
 ---
 lt:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/lv.yml b/config/locales/lv.yml
index 2a6f4090b..7884d786c 100644
--- a/config/locales/lv.yml
+++ b/config/locales/lv.yml
@@ -1,5 +1,10 @@
 ---
 lv:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/ms.yml b/config/locales/ms.yml
index 1d7ee79f1..c52ec113c 100644
--- a/config/locales/ms.yml
+++ b/config/locales/ms.yml
@@ -1,5 +1,10 @@
 ---
 ms:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/mt.yml b/config/locales/mt.yml
index c011aab94..c21e386d9 100644
--- a/config/locales/mt.yml
+++ b/config/locales/mt.yml
@@ -1,5 +1,10 @@
 ---
 mt:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/ne.yml b/config/locales/ne.yml
index 618cf1d18..1f4f47131 100644
--- a/config/locales/ne.yml
+++ b/config/locales/ne.yml
@@ -1,5 +1,10 @@
 ---
 ne:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/nl.yml b/config/locales/nl.yml
index dba3b9c15..d485b5317 100644
--- a/config/locales/nl.yml
+++ b/config/locales/nl.yml
@@ -1,5 +1,10 @@
 ---
 nl:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/no.yml b/config/locales/no.yml
index 875f653dd..7031eba80 100644
--- a/config/locales/no.yml
+++ b/config/locales/no.yml
@@ -1,5 +1,10 @@
 ---
 'no':
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/pa-pk.yml b/config/locales/pa-pk.yml
index 27bc4901f..186808e8b 100644
--- a/config/locales/pa-pk.yml
+++ b/config/locales/pa-pk.yml
@@ -1,5 +1,10 @@
 ---
 pa-pk:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/pa.yml b/config/locales/pa.yml
index b44b63140..87a794acb 100644
--- a/config/locales/pa.yml
+++ b/config/locales/pa.yml
@@ -1,5 +1,10 @@
 ---
 pa:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/pl.yml b/config/locales/pl.yml
index 56ea1bcbd..3f8ee3554 100644
--- a/config/locales/pl.yml
+++ b/config/locales/pl.yml
@@ -1,5 +1,10 @@
 ---
 pl:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/ps.yml b/config/locales/ps.yml
index 6c77cf504..33b349d5e 100644
--- a/config/locales/ps.yml
+++ b/config/locales/ps.yml
@@ -1,5 +1,10 @@
 ---
 ps:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/pt.yml b/config/locales/pt.yml
index c7dd2e6ec..8e6c5c45b 100644
--- a/config/locales/pt.yml
+++ b/config/locales/pt.yml
@@ -1,5 +1,10 @@
 ---
 pt:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/ro.yml b/config/locales/ro.yml
index 6b6f9436c..aca63eb5f 100644
--- a/config/locales/ro.yml
+++ b/config/locales/ro.yml
@@ -1,5 +1,10 @@
 ---
 ro:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/ru.yml b/config/locales/ru.yml
index 6de4431dc..260a6367d 100644
--- a/config/locales/ru.yml
+++ b/config/locales/ru.yml
@@ -1,5 +1,10 @@
 ---
 ru:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/si.yml b/config/locales/si.yml
index d3a871751..71af952a8 100644
--- a/config/locales/si.yml
+++ b/config/locales/si.yml
@@ -1,5 +1,10 @@
 ---
 si:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/sk.yml b/config/locales/sk.yml
index 8aa445aaf..588c1eaee 100644
--- a/config/locales/sk.yml
+++ b/config/locales/sk.yml
@@ -1,5 +1,10 @@
 ---
 sk:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/sl.yml b/config/locales/sl.yml
index f3514c30b..2b83d434d 100644
--- a/config/locales/sl.yml
+++ b/config/locales/sl.yml
@@ -1,5 +1,10 @@
 ---
 sl:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/so.yml b/config/locales/so.yml
index c45b961a5..b464b3fbd 100644
--- a/config/locales/so.yml
+++ b/config/locales/so.yml
@@ -1,5 +1,10 @@
 ---
 so:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/sq.yml b/config/locales/sq.yml
index 9357490b0..57dc94d63 100644
--- a/config/locales/sq.yml
+++ b/config/locales/sq.yml
@@ -1,5 +1,10 @@
 ---
 sq:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/sr.yml b/config/locales/sr.yml
index fdeb77fb3..4be968112 100644
--- a/config/locales/sr.yml
+++ b/config/locales/sr.yml
@@ -1,5 +1,10 @@
 ---
 sr:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/sv.yml b/config/locales/sv.yml
index 75699d07d..332460f7c 100644
--- a/config/locales/sv.yml
+++ b/config/locales/sv.yml
@@ -1,5 +1,10 @@
 ---
 sv:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/sw.yml b/config/locales/sw.yml
index 27ec50d7d..916707208 100644
--- a/config/locales/sw.yml
+++ b/config/locales/sw.yml
@@ -1,5 +1,10 @@
 ---
 sw:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/ta.yml b/config/locales/ta.yml
index a569d0ef2..adb8038ae 100644
--- a/config/locales/ta.yml
+++ b/config/locales/ta.yml
@@ -1,5 +1,10 @@
 ---
 ta:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/th.yml b/config/locales/th.yml
index a1d9254dc..0400e4146 100644
--- a/config/locales/th.yml
+++ b/config/locales/th.yml
@@ -1,5 +1,10 @@
 ---
 th:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/tk.yml b/config/locales/tk.yml
index 16fd49df1..2cc272b4f 100644
--- a/config/locales/tk.yml
+++ b/config/locales/tk.yml
@@ -1,5 +1,10 @@
 ---
 tk:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/tr.yml b/config/locales/tr.yml
index d956cd022..5d83eafb6 100644
--- a/config/locales/tr.yml
+++ b/config/locales/tr.yml
@@ -1,5 +1,10 @@
 ---
 tr:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/uk.yml b/config/locales/uk.yml
index 191d1ba80..956e6e8fb 100644
--- a/config/locales/uk.yml
+++ b/config/locales/uk.yml
@@ -1,5 +1,10 @@
 ---
 uk:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/ur.yml b/config/locales/ur.yml
index 97fbe83ad..1a9c287cc 100644
--- a/config/locales/ur.yml
+++ b/config/locales/ur.yml
@@ -1,5 +1,10 @@
 ---
 ur:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/uz.yml b/config/locales/uz.yml
index 7f011bfe6..481d1506e 100644
--- a/config/locales/uz.yml
+++ b/config/locales/uz.yml
@@ -1,5 +1,10 @@
 ---
 uz:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/vi.yml b/config/locales/vi.yml
index 9ac68165b..2466ba48f 100644
--- a/config/locales/vi.yml
+++ b/config/locales/vi.yml
@@ -1,5 +1,10 @@
 ---
 vi:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/yi.yml b/config/locales/yi.yml
index 63dd75a3d..1e8aec0d5 100644
--- a/config/locales/yi.yml
+++ b/config/locales/yi.yml
@@ -1,5 +1,10 @@
 ---
 yi:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/zh-hk.yml b/config/locales/zh-hk.yml
index b5f61447a..176549bbb 100644
--- a/config/locales/zh-hk.yml
+++ b/config/locales/zh-hk.yml
@@ -1,5 +1,10 @@
 ---
 zh-hk:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/zh-tw.yml b/config/locales/zh-tw.yml
index 759f68f1b..0c033d2d8 100644
--- a/config/locales/zh-tw.yml
+++ b/config/locales/zh-tw.yml
@@ -1,5 +1,10 @@
 ---
 zh-tw:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/config/locales/zh.yml b/config/locales/zh.yml
index ae037fffd..8bcc24de6 100644
--- a/config/locales/zh.yml
+++ b/config/locales/zh.yml
@@ -1,5 +1,10 @@
 ---
 zh:
+  ab_tests:
+    find_utr_number_video_links:
+      A:
+      B:
+      Z:
   call_for_evidence:
     and:
     another_website_html:
diff --git a/test/controllers/content_items_controller_test.rb b/test/controllers/content_items_controller_test.rb
index 8cd57808a..7038b0e0a 100644
--- a/test/controllers/content_items_controller_test.rb
+++ b/test/controllers/content_items_controller_test.rb
@@ -364,6 +364,51 @@ class ContentItemsControllerTest < ActionController::TestCase
     assert_equal "true", @response.headers[Slimmer::Headers::REMOVE_SEARCH_HEADER]
   end
 
+  test "AB test replaces content on the find-utr-number page with default" do
+    content_item = content_store_has_schema_example("answer", "answer")
+    content_item["base_path"] = "/find-utr-number"
+    content_item["details"]["body"] = "<li>{{ab_test_find_utr_number_video_links}}</li>"
+
+    stub_content_store_has_item(content_item["base_path"], content_item)
+
+    request.headers["HTTP_GOVUK_ABTEST_FIND_UTR_NUMBER_VIDEO_LINKS"] = nil
+
+    get :show, params: { path: path_for(content_item) }
+    assert_response :success
+    assert_no_match "{{ab_test_find_utr_number_video_links}}", response.body
+    assert_match "<li>#{I18n.t('ab_tests.find_utr_number_video_links.Z')}</li>", response.body
+  end
+
+  test "AB test replaces content on the find-utr-number page with variant A" do
+    content_item = content_store_has_schema_example("answer", "answer")
+    content_item["base_path"] = "/find-utr-number"
+    content_item["details"]["body"] = "<li>{{ab_test_find_utr_number_video_links}}</li>"
+
+    stub_content_store_has_item(content_item["base_path"], content_item)
+
+    request.headers["HTTP_GOVUK_ABTEST_FIND_UTR_NUMBER_VIDEO_LINKS"] = "A"
+
+    get :show, params: { path: path_for(content_item) }
+    assert_response :success
+    assert_no_match "{{ab_test_find_utr_number_video_links}}", response.body
+    assert_match "<li>#{I18n.t('ab_tests.find_utr_number_video_links.A')}</li>", response.body
+  end
+
+  test "AB test replaces content on the find-utr-number page with variant B" do
+    content_item = content_store_has_schema_example("answer", "answer")
+    content_item["base_path"] = "/find-utr-number"
+    content_item["details"]["body"] = "<li>{{ab_test_find_utr_number_video_links}}</li>"
+
+    stub_content_store_has_item(content_item["base_path"], content_item)
+
+    request.headers["HTTP_GOVUK_ABTEST_FIND_UTR_NUMBER_VIDEO_LINKS"] = "B"
+
+    get :show, params: { path: path_for(content_item) }
+    assert_response :success
+    assert_no_match "{{ab_test_find_utr_number_video_links}}", response.body
+    assert_match "<li>#{I18n.t('ab_tests.find_utr_number_video_links.B')}</li>", response.body
+  end
+
   def path_for(content_item, locale = nil)
     base_path = content_item["base_path"].sub(/^\//, "")
     base_path.gsub!(/\.#{locale}$/, "") if locale