diff --git a/app/controllers/posts_controller.rb b/app/controllers/posts_controller.rb
index 05f73e5a5e..8bc34c8083 100644
--- a/app/controllers/posts_controller.rb
+++ b/app/controllers/posts_controller.rb
@@ -1,9 +1,13 @@
 class PostsController < ApplicationController
   def index
+    return not_found if params[:section] == "transcripts"
+
     @subcategories = MarkdownDocument.all_subcategories(params[:section])
   end
 
   def subcategory
+    return not_found if params[:section] == "transcripts"
+
     @posts = MarkdownDocument.all(params[:section], params[:subcategory])
     render :subcategory
   end
diff --git a/app/views/posts/show.html.slim b/app/views/posts/show.html.slim
index fff447ccd7..64a6ad3370 100644
--- a/app/views/posts/show.html.slim
+++ b/app/views/posts/show.html.slim
@@ -2,12 +2,13 @@
 - content_for :page_title_prefix, @post.title
 - content_for :page_description, @post.meta_description
 
-- content_for :breadcrumbs do
-  nav aria-label="breadcrumb" role="navigation"
-    = govuk_breadcrumbs breadcrumbs: { t("breadcrumbs.home") => root_path,
-                                       params[:section].titleize.capitalize => posts_path(section: params[:section]),
-                                       formatted_subcategory => subcategory_path(section: params[:section], subcategory: params[:subcategory]),
-                                       @post.title => "" }
+- unless params[:section] == "transcripts"
+  - content_for :breadcrumbs do
+    nav aria-label="breadcrumb" role="navigation"
+      = govuk_breadcrumbs breadcrumbs: { t("breadcrumbs.home") => root_path,
+                                        params[:section].titleize.capitalize => posts_path(section: params[:section]),
+                                        formatted_subcategory => subcategory_path(section: params[:section], subcategory: params[:subcategory]),
+                                        @post.title => "" }
 
 .govuk-grid-row.post
   .govuk-grid-column-two-thirds
diff --git a/spec/controllers/posts_controller_spec.rb b/spec/controllers/posts_controller_spec.rb
index 0af5cbd12a..7bcd737ab3 100644
--- a/spec/controllers/posts_controller_spec.rb
+++ b/spec/controllers/posts_controller_spec.rb
@@ -27,6 +27,14 @@
 
       expect(response).to render_template("index")
     end
+
+    context "when section is 'transcripts'" do
+      it "responds with a 404 not found" do
+        get :index, params: { section: "transcripts" }
+
+        expect(response).to have_http_status(:not_found)
+      end
+    end
   end
 
   describe "#subcategory" do
@@ -99,6 +107,14 @@
           expect(assigns(:posts).map(&:post_name).sort).to eq(post_names.sort)
         end
       end
+
+      context "when section is 'transcripts'" do
+        it "responds with a 404 not found" do
+          get :subcategory, params: { section: "transcripts", subcategory: "jobseekers" }
+
+          expect(response).to have_http_status(:not_found)
+        end
+      end
     end
 
     it "renders the subcategory template" do