+ <%= render 'govuk_publishing_components/components/intervention' if should_show_sab_intervention? %>
+
<%= render 'govuk_publishing_components/components/govspeak', {
direction: page_text_direction,
disable_youtube_expansions: true,
diff --git a/app/views/content_items/document_collection.html.erb b/app/views/content_items/document_collection.html.erb
index 964e39839..475a48d20 100644
--- a/app/views/content_items/document_collection.html.erb
+++ b/app/views/content_items/document_collection.html.erb
@@ -26,6 +26,8 @@
<%= render 'components/important-metadata',
items: @content_item.important_metadata %>
+ <%= render 'govuk_publishing_components/components/intervention' if should_show_sab_intervention? %>
+
<%= render "components/contents-list-with-body", contents: @content_item.contents do %>
<%= render 'document_collection_body' %>
diff --git a/app/views/content_items/guide.html.erb b/app/views/content_items/guide.html.erb
index 2b999bf1b..1ed5dc716 100644
--- a/app/views/content_items/guide.html.erb
+++ b/app/views/content_items/guide.html.erb
@@ -18,6 +18,8 @@
<%= render 'govuk_publishing_components/components/title', { title: @content_item.content_title } %>
+ <%= render 'govuk_publishing_components/components/intervention' if should_show_sab_intervention? %>
+
<% if @content_item.show_guide_navigation? %>
<%= render "govuk_publishing_components/components/skip_link", {
text: t("guide.skip_to_contents"),
diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
index d7ca0896a..91e9b473b 100644
--- a/app/views/layouts/application.html.erb
+++ b/app/views/layouts/application.html.erb
@@ -22,6 +22,7 @@
<%= javascript_include_tag "application", integrity: false %>
<%= csrf_meta_tags %>
<%= render 'govuk_publishing_components/components/meta_tags', content_item: @content_item.content_item %>
+ <%= sab_page_variant.analytics_meta_tag.html_safe if is_testable_sab_page? %>
<% if @content_item.description %>
diff --git a/test/controllers/sab_ab_test.rb b/test/controllers/sab_ab_test.rb
new file mode 100644
index 000000000..87f42a791
--- /dev/null
+++ b/test/controllers/sab_ab_test.rb
@@ -0,0 +1,64 @@
+require "test_helper"
+
+class ContentItemsControllerTest < ActionController::TestCase
+ include GovukAbTesting::MinitestHelpers
+ INTERVENTION_CSS_SELECTOR = "gem-c-intervention".freeze
+
+ test "shows intervention for variant B" do
+ for_each_schema do |schema|
+ with_variant StartABusinessSegment: "B" do
+ with_is_sab_page_header("true") do
+ set_up_and_visit_content_item_for_schema(schema)
+ assert has_intervention_css_selector
+ end
+ end
+ end
+ end
+
+ test "doesn't show intervention for variant A" do
+ for_each_schema do |schema|
+ with_variant StartABusinessSegment: "A" do
+ with_is_sab_page_header("true") do
+ set_up_and_visit_content_item_for_schema(schema)
+
+ assert_not has_intervention_css_selector
+ end
+ end
+ end
+ end
+
+ test "doesn't show intervention for variant C" do
+ for_each_schema do |schema|
+ with_variant StartABusinessSegment: "C" do
+ with_is_sab_page_header("true") do
+ set_up_and_visit_content_item_for_schema(schema)
+
+ assert_not has_intervention_css_selector
+ end
+ end
+ end
+ end
+
+private
+
+ def set_up_and_visit_content_item_for_schema(schema)
+ content_item = content_store_has_schema_example(schema, schema)
+ stub_content_store_has_item(content_item["base_path"], content_item)
+ path = content_item["base_path"][1..]
+
+ get :show, params: { path: path }
+ end
+
+ def has_intervention_css_selector
+ response.body.include?(INTERVENTION_CSS_SELECTOR)
+ end
+
+ def with_is_sab_page_header(is_sab_header)
+ request.headers["HTTP_GOVUK_ABTEST_ISSTARTABUSINESSPAGE"] = is_sab_header
+ yield
+ end
+
+ def for_each_schema(&block)
+ %w[guide answer document_collection].each(&block)
+ end
+end