diff --git a/app/assets/stylesheets/application-ie6.scss b/app/assets/stylesheets/application-ie6.scss
deleted file mode 100644
index 3d507bd28..000000000
--- a/app/assets/stylesheets/application-ie6.scss
+++ /dev/null
@@ -1,7 +0,0 @@
-// BASE STYLESHEET FOR IE 6 COMPILER
-
-$is-ie: true;
-$ie-version: 6;
-$mobile-ie6: false;
-
-@import "application";
diff --git a/app/assets/stylesheets/application-ie7.scss b/app/assets/stylesheets/application-ie7.scss
deleted file mode 100644
index 78a06dc2d..000000000
--- a/app/assets/stylesheets/application-ie7.scss
+++ /dev/null
@@ -1,6 +0,0 @@
-// BASE STYLESHEET FOR IE 7 COMPILER
-
-$is-ie: true;
-$ie-version: 7;
-
-@import "application";
diff --git a/app/assets/stylesheets/application-ie8.scss b/app/assets/stylesheets/application-ie8.scss
deleted file mode 100644
index 68ef7eeb0..000000000
--- a/app/assets/stylesheets/application-ie8.scss
+++ /dev/null
@@ -1,6 +0,0 @@
-// BASE STYLESHEET FOR IE 8 COMPILER
-
-$is-ie: true;
-$ie-version: 8;
-
-@import "application";
diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
index 282739496..3561bcef6 100644
--- a/app/views/layouts/application.html.erb
+++ b/app/views/layouts/application.html.erb
@@ -8,10 +8,7 @@
       <%= @content_item.page_title %> - GOV.UK
     <% end %>
   </title>
-  <!--[if gt IE 8]><!--><%= stylesheet_link_tag "application", integrity: true, crossorigin: 'anonymous' %><!--<![endif]-->
-  <!--[if IE 6]><%= stylesheet_link_tag "application-ie6" %><script>var ieVersion = 6;</script><![endif]-->
-  <!--[if IE 7]><%= stylesheet_link_tag "application-ie7" %><script>var ieVersion = 7;</script><![endif]-->
-  <!--[if IE 8]><%= stylesheet_link_tag "application-ie8" %><script>var ieVersion = 8;</script><![endif]-->
+  <%= stylesheet_link_tag "application", integrity: true, crossorigin: 'anonymous' %>
   <% if Rails.env.test? && params[:medium] == 'print' %>
     <%= stylesheet_link_tag "print.css", :media => "screen", integrity: true, crossorigin: 'anonymous' %>
   <% else %>
diff --git a/config/initializers/assets.rb b/config/initializers/assets.rb
index 1442f0fd9..fe56f2619 100644
--- a/config/initializers/assets.rb
+++ b/config/initializers/assets.rb
@@ -9,10 +9,6 @@
 # Precompile additional assets.
 # application.js, application.css, and all non-JS/CSS in app/assets folder are already added.
 Rails.application.config.assets.precompile += %w(
-  application-ie6.css
-  application-ie6.css
-  application-ie7.css
-  application-ie8.css
   print.css
   webchat.js
 )