diff --git a/templates/web/base/admin/bodies/body.html b/templates/web/base/admin/bodies/body.html
index 6de785ad4b2..f1649cc8f45 100644
--- a/templates/web/base/admin/bodies/body.html
+++ b/templates/web/base/admin/bodies/body.html
@@ -33,6 +33,13 @@
     <a href="[% c.uri_for_action( 'admin/bodies/edit', [ body_id ], { text => 1 } ) %]">[% loc('Text only version') %]</a>
 </p>
 
+[% IF body.name == 'TfL' AND c.user.is_superuser %]
+<p class="fms-admin-warning">
+    Renaming, adding, or removing categories that can only be made on red routes requires extra steps. See
+    <a href="https://wiki.mysociety.org/wiki/Transport_for_London_(TfL)#TLRN_categories">wiki</a>.
+</p>
+[% END %]
+
 
 [% IF body.send_method == 'Open311' %]
   <h2>
@@ -140,6 +147,13 @@ <h2>
     <h2>[% loc('Add new category') %]</h2>
   [% END %]
 
+  [% IF body.name == 'TfL' AND c.user.is_superuser %]
+  <p class="fms-admin-warning">
+      Renaming, adding, or removing categories that can only be made on red routes requires extra steps. See
+      <a href="https://wiki.mysociety.org/wiki/Transport_for_London_(TfL)#TLRN_categories">wiki</a>.
+  </p>
+  [% END %]
+
   [% IF errors %]
   <div class="fms-admin-warning">
     [% FOR error IN errors.values %][% error %][% IF NOT loop.last %]<br>[% END %][% END %]
diff --git a/templates/web/base/admin/bodies/category.html b/templates/web/base/admin/bodies/category.html
index de8cb19eca6..9633b93dfdd 100644
--- a/templates/web/base/admin/bodies/category.html
+++ b/templates/web/base/admin/bodies/category.html
@@ -20,6 +20,13 @@
 [% END %]
 </p>
 
+[% IF body.name == 'TfL' AND c.user.is_superuser %]
+<p class="fms-admin-warning">
+    Renaming, adding, or removing categories that can only be made on red routes requires extra steps. See
+    <a href="https://wiki.mysociety.org/wiki/Transport_for_London_(TfL)#TLRN_categories">wiki</a>.
+</p>
+[% END %]
+
 [% INCLUDE 'admin/bodies/contact-form.html' %]
 
 <h2>[% loc('History') %]</h2>