diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0458829b52..c3c1e01f55 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,15 @@
 ### Breaking changes
 You must make the following changes when you migrate to this release, or your service may break.
 
+#### Remove deprecated `govuk-main-wrapper` and `govuk-main-wrapper--l` mixins
+In [GOV.UK Frontend version 3.0.0](https://github.com/alphagov/govuk-frontend/releases/tag/v3.0.0), we deprecated the `govuk-main-wrapper` and `govuk-main-wrapper--l` Sass mixins.
+
+We've now removed the `govuk-main-wrapper` and `govuk-main-wrapper--l` mixins.
+
+Remove any use of these mixins in your own Sass. You can replace these mixins with direct references to the [spacing mixins](https://design-system.service.gov.uk/styles/spacing/#spacing-on-custom-components)
+
+This change was introduced in [pull request #2385: Remove deprecated `govuk-main-wrapper` and `govuk-main-wrapper--l` mixins](https://github.com/alphagov/govuk-frontend/pull/2385).
+
 #### Remove deprecated `$govuk-border-width-form-element-error` variable
 In [GOV.UK Frontend version 3.8.0](https://github.com/alphagov/govuk-frontend/releases/tag/v3.8.0), we made the border width of form elements in their error state the same as for form elements in their normal state, and deprecated the `$govuk-border-width-form-element-error` variable.
 
diff --git a/src/govuk/objects/_main-wrapper.scss b/src/govuk/objects/_main-wrapper.scss
index 44779db0db..49d214f9c6 100644
--- a/src/govuk/objects/_main-wrapper.scss
+++ b/src/govuk/objects/_main-wrapper.scss
@@ -21,37 +21,22 @@
 //   </div>
 // </div>
 
-/// @deprecated Replace this mixin with more direct references to the [spacing
-/// mixins](https://design-system.service.gov.uk/styles/spacing/#spacing-on-custom-components).
-@mixin govuk-main-wrapper {
-  // In IE11 the `main` element can be used, but is not recognized  –
-  // meaning it's not defined in IE's default style sheet,
-  // so it uses CSS initial value, which is inline.
-  display: block;
-  padding-top: govuk-spacing(4);
-  padding-bottom: govuk-spacing(4);
-
-  @include govuk-media-query($from: tablet) {
-    // This spacing is manually adjusted to replicate the margin of
-    // govuk-heading-xl (50px) minus the spacing of back link and
-    // breadcrumbs (10px)
-    padding-top: govuk-spacing(7);
-    padding-bottom: govuk-spacing(7);
-  }
-}
-
-/// Use govuk-main-wrapper--l when you page does not have Breadcrumbs, phase
-/// banners or back links.
-///
-/// @deprecated Replace this mixin with more direct references to the [spacing
-/// mixins](https://design-system.service.gov.uk/styles/spacing/#spacing-on-custom-components).
-@mixin govuk-main-wrapper--l {
-  @include govuk-responsive-padding(8, "top");
-}
-
 @include govuk-exports("govuk/objects/main-wrapper") {
   .govuk-main-wrapper {
-    @include govuk-main-wrapper;
+    // In IE11 the `main` element can be used, but is not recognized  –
+    // meaning it's not defined in IE's default style sheet,
+    // so it uses CSS initial value, which is inline.
+    display: block;
+    padding-top: govuk-spacing(4);
+    padding-bottom: govuk-spacing(4);
+
+    @include govuk-media-query($from: tablet) {
+      // This spacing is manually adjusted to replicate the margin of
+      // govuk-heading-xl (50px) minus the spacing of back link and
+      // breadcrumbs (10px)
+      padding-top: govuk-spacing(7);
+      padding-bottom: govuk-spacing(7);
+    }
   }
 
   // Using the `.govuk-main-wrapper--auto-spacing` modifier should apply the
@@ -63,6 +48,6 @@
   // `govuk-main-wrapper--l` modifier instead.
   .govuk-main-wrapper--auto-spacing:first-child,
   .govuk-main-wrapper--l {
-    @include govuk-main-wrapper--l;
+    @include govuk-responsive-padding(8, "top");
   }
 }