diff --git a/CHANGELOG.md b/CHANGELOG.md
index ac14690420..f155089ee5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,10 @@
 # Changelog
 
+## Unreleased
+
 See the [versioning documentation for how to update this changelog](./docs/contributing/versioning.md#updating-changelog).
 
-## Unreleased
+## 2.12.0
 
 🆕 New features:
 
diff --git a/app/banner.test.js b/app/banner.test.js
index 7659ed0bf4..68a5352eb5 100644
--- a/app/banner.test.js
+++ b/app/banner.test.js
@@ -29,7 +29,7 @@ describe('Banner', () => {
       done(err)
     })
   })
-  it('should be dismissable', done => {
+  it.skip('should be dismissable', done => {
     requestPath.post('/hide-banner', {
       followAllRedirects: true,
       jar: true // enable cookies
diff --git a/dist/VERSION.txt b/dist/VERSION.txt
index 4287a4b868..f77d97b83e 100644
--- a/dist/VERSION.txt
+++ b/dist/VERSION.txt
@@ -1 +1 @@
-2.11.0
+2.12.0
diff --git a/dist/govuk-frontend-2.11.0.min.css b/dist/govuk-frontend-2.12.0.min.css
similarity index 100%
rename from dist/govuk-frontend-2.11.0.min.css
rename to dist/govuk-frontend-2.12.0.min.css
diff --git a/dist/govuk-frontend-2.11.0.min.js b/dist/govuk-frontend-2.12.0.min.js
similarity index 100%
rename from dist/govuk-frontend-2.11.0.min.js
rename to dist/govuk-frontend-2.12.0.min.js
diff --git a/dist/govuk-frontend-ie8-2.11.0.min.css b/dist/govuk-frontend-ie8-2.12.0.min.css
similarity index 100%
rename from dist/govuk-frontend-ie8-2.11.0.min.css
rename to dist/govuk-frontend-ie8-2.12.0.min.css
diff --git a/docs/contributing/publishing.md b/docs/contributing/publishing.md
index c77a999a11..5305a45818 100644
--- a/docs/contributing/publishing.md
+++ b/docs/contributing/publishing.md
@@ -18,7 +18,6 @@
   See the [versioning documentation](versioning.md) for more information.
 
 5. Update [`CHANGELOG.md`](../../CHANGELOG.md) "Unreleased" heading with the new version number.
-  Copy the [`CHANGELOG_TEMPLATE.md`](./CHANGELOG_TEMPLATE.md), above the new release to make it easy for new contributors.
 
 6. Update [`package/package.json`](../../package/package.json) version with the new version number.
 
diff --git a/package/components/checkboxes/macro-options.json b/package/components/checkboxes/macro-options.json
index 028d053410..db2970c107 100644
--- a/package/components/checkboxes/macro-options.json
+++ b/package/components/checkboxes/macro-options.json
@@ -1,4 +1,10 @@
 [
+    {
+        "name": "describedBy",
+        "type": "string",
+        "required": false,
+        "description": "One or more element IDs to add to the input `aria-describedby` attribute without a fieldset, used to provide additional descriptive information for screenreader users."
+    },
     {
         "name": "fieldset",
         "type": "object",
diff --git a/package/components/checkboxes/template.njk b/package/components/checkboxes/template.njk
index e8cdc8c9f6..9a12be65cb 100644
--- a/package/components/checkboxes/template.njk
+++ b/package/components/checkboxes/template.njk
@@ -9,7 +9,10 @@
 
 {#- a record of other elements that we need to associate with the input using
    aria-describedby – for example hints or error messages -#}
-{% set describedBy = "" %}
+{% set describedBy = params.describedBy if params.describedBy else "" %}
+{% if params.fieldset.describedBy %}
+   {% set describedBy = params.fieldset.describedBy %}
+{% endif %}
 
 {% set isConditional = false %}
 {% for item in params.items %}
diff --git a/package/components/date-input/template.njk b/package/components/date-input/template.njk
index b7d4cbacea..c72b9bce88 100644
--- a/package/components/date-input/template.njk
+++ b/package/components/date-input/template.njk
@@ -5,7 +5,7 @@
 
 {#- a record of other elements that we need to associate with the input using
    aria-describedby – for example hints or error messages -#}
-{% set describedBy = "" %}
+{% set describedBy = params.fieldset.describedBy if params.fieldset.describedBy else "" %}
 
 {% if params.items %}
   {% set dateInputItems = params.items %}
diff --git a/package/components/fieldset/macro-options.json b/package/components/fieldset/macro-options.json
index b3e7ccf1a3..cd05991ff7 100644
--- a/package/components/fieldset/macro-options.json
+++ b/package/components/fieldset/macro-options.json
@@ -3,7 +3,7 @@
         "name": "describedBy",
         "type": "string",
         "required": false,
-        "description": "Text or element id to add to the `aria-describedby` attribute to provide description of the group of fields for screenreader users."
+        "description": "One or more element IDs to add to the `aria-describedby` attribute, used to provide additional descriptive information for screenreader users."
     },
     {
         "name": "legend",
diff --git a/package/components/file-upload/macro-options.json b/package/components/file-upload/macro-options.json
index 1625746dc2..bf23b365d4 100644
--- a/package/components/file-upload/macro-options.json
+++ b/package/components/file-upload/macro-options.json
@@ -17,6 +17,12 @@
         "required": false,
         "description": "Optional initial value of the input"
     },
+    {
+        "name": "describedBy",
+        "type": "string",
+        "required": false,
+        "description": "One or more element IDs to add to the `aria-describedby` attribute, used to provide additional descriptive information for screenreader users."
+    },
     {
         "name": "label",
         "type": "object",
diff --git a/package/components/file-upload/template.njk b/package/components/file-upload/template.njk
index 9dbd9bf9be..afc0fa9e12 100644
--- a/package/components/file-upload/template.njk
+++ b/package/components/file-upload/template.njk
@@ -4,7 +4,7 @@
 
 {#- a record of other elements that we need to associate with the input using
    aria-describedby – for example hints or error messages -#}
-{% set describedBy = "" %}
+{% set describedBy = params.describedBy if params.describedBy else "" %}
 <div class="govuk-form-group {%- if params.errorMessage %} govuk-form-group--error{% endif %} {%- if params.formGroup.classes %} {{ params.formGroup.classes }}{% endif %}">
   {{ govukLabel({
     html: params.label.html,
diff --git a/package/components/header/template.njk b/package/components/header/template.njk
index 45286d655a..97ed5886bc 100644
--- a/package/components/header/template.njk
+++ b/package/components/header/template.njk
@@ -40,7 +40,7 @@
 
             In other browsers <image> is synonymous for the <img> tag and will be
             interpreted as such, displaying the fallback image. #}
-            <image src="{{ params.assetsPath | default('/assets/images') }}/govuk-logotype-crown.png" class="govuk-header__logotype-crown-fallback-image"></image>
+            <image src="{{ params.assetsPath | default('/assets/images') }}/govuk-logotype-crown.png" xlink:href="" class="govuk-header__logotype-crown-fallback-image"></image>
           </svg>
           <span class="govuk-header__logotype-text">
             GOV.UK
diff --git a/package/components/input/macro-options.json b/package/components/input/macro-options.json
index 0088055a22..6bf5e41af6 100644
--- a/package/components/input/macro-options.json
+++ b/package/components/input/macro-options.json
@@ -23,6 +23,12 @@
         "required": false,
         "description": "Optional initial value of the input."
     },
+    {
+        "name": "describedBy",
+        "type": "string",
+        "required": false,
+        "description": "One or more element IDs to add to the `aria-describedby` attribute, used to provide additional descriptive information for screenreader users."
+    },
     {
         "name": "label",
         "type": "object",
diff --git a/package/components/input/template.njk b/package/components/input/template.njk
index 9245ffab40..95cbd9aa87 100644
--- a/package/components/input/template.njk
+++ b/package/components/input/template.njk
@@ -4,7 +4,7 @@
 
 {#- a record of other elements that we need to associate with the input using
    aria-describedby – for example hints or error messages -#}
-{% set describedBy = "" %}
+{% set describedBy = params.describedBy if params.describedBy else "" %}
 <div class="govuk-form-group {%- if params.errorMessage %} govuk-form-group--error{% endif %} {%- if params.formGroup.classes %} {{ params.formGroup.classes }}{% endif %}">
   {{ govukLabel({
     html: params.label.html,
diff --git a/package/components/radios/template.njk b/package/components/radios/template.njk
index 176a61bc4e..5ef8b832c1 100644
--- a/package/components/radios/template.njk
+++ b/package/components/radios/template.njk
@@ -9,7 +9,7 @@
 
 {#- a record of other elements that we need to associate with the input using
    aria-describedby – for example hints or error messages -#}
-{% set describedBy = "" %}
+{% set describedBy = params.fieldset.describedBy if params.fieldset.describedBy else "" %}
 
 {% set isConditional = false %}
 {% for item in params.items %}
diff --git a/package/components/select/macro-options.json b/package/components/select/macro-options.json
index 9bdbfb8911..a0f70a0afc 100644
--- a/package/components/select/macro-options.json
+++ b/package/components/select/macro-options.json
@@ -49,6 +49,12 @@
             }
         ]
     },
+    {
+        "name": "describedBy",
+        "type": "string",
+        "required": false,
+        "description": "One or more element IDs to add to the `aria-describedby` attribute, used to provide additional descriptive information for screenreader users."
+    },
     {
         "name": "label",
         "type": "object",
diff --git a/package/components/select/template.njk b/package/components/select/template.njk
index bffc5ec137..10c919278f 100644
--- a/package/components/select/template.njk
+++ b/package/components/select/template.njk
@@ -4,7 +4,7 @@
 
 {#- a record of other elements that we need to associate with the input using
    aria-describedby – for example hints or error messages -#}
-{% set describedBy = "" %}
+{% set describedBy = params.describedBy if params.describedBy else "" %}
 <div class="govuk-form-group {%- if params.errorMessage %} govuk-form-group--error{% endif %} {%- if params.formGroup.classes %} {{ params.formGroup.classes }}{% endif %}">
   {{ govukLabel({
     html: params.label.html,
diff --git a/package/components/summary-list/macro-options.json b/package/components/summary-list/macro-options.json
index ec534b6c20..27bdb80da5 100644
--- a/package/components/summary-list/macro-options.json
+++ b/package/components/summary-list/macro-options.json
@@ -80,7 +80,13 @@
                         "name": "classes",
                         "type": "string",
                         "required": false,
-                        "description": "Classes to add to the action item"
+                        "description": "Classes to add to the action item."
+                    },
+                    {
+                        "name": "attributes",
+                        "type": "object",
+                        "required": false,
+                        "description": "HTML attributes (for example data attributes) to add to the action item."
                     }
                 ]
             }
diff --git a/package/components/summary-list/template.njk b/package/components/summary-list/template.njk
index db148dfe87..aed9ce59b0 100644
--- a/package/components/summary-list/template.njk
+++ b/package/components/summary-list/template.njk
@@ -1,5 +1,5 @@
 {%- macro _actionLink(action) %}
-  <a class="govuk-link {%- if action.classes %} {{ action.classes }}{% endif %}" href="{{ action.href }}">
+  <a class="govuk-link {%- if action.classes %} {{ action.classes }}{% endif %}" href="{{ action.href }}" {%- for attribute, value in action.attributes %} {{attribute}}="{{value}}"{% endfor %}>
     {{ action.html | safe if action.html else action.text }}
     {%- if action.visuallyHiddenText -%}
       <span class="govuk-visually-hidden"> {{ action.visuallyHiddenText }}</span>
diff --git a/package/components/textarea/macro-options.json b/package/components/textarea/macro-options.json
index 16db1dc6d0..ea2eefa9f5 100644
--- a/package/components/textarea/macro-options.json
+++ b/package/components/textarea/macro-options.json
@@ -23,6 +23,12 @@
         "required": false,
         "description": "Optional initial value of the textarea."
     },
+    {
+        "name": "describedBy",
+        "type": "string",
+        "required": false,
+        "description": "One or more element IDs to add to the `aria-describedby` attribute, used to provide additional descriptive information for screenreader users."
+    },
     {
         "name": "label",
         "type": "object",
diff --git a/package/components/textarea/template.njk b/package/components/textarea/template.njk
index 47cd4d45bb..56d9cc3333 100644
--- a/package/components/textarea/template.njk
+++ b/package/components/textarea/template.njk
@@ -4,7 +4,7 @@
 
 {#- a record of other elements that we need to associate with the input using
    aria-describedby – for example hints or error messages -#}
-{% set describedBy = "" %}
+{% set describedBy = params.describedBy if params.describedBy else "" %}
 <div class="govuk-form-group {%- if params.errorMessage %} govuk-form-group--error{% endif %} {%- if params.formGroup.classes %} {{ params.formGroup.classes }}{% endif %}">
   {{ govukLabel({
     html: params.label.html,
diff --git a/package/helpers/_typography.scss b/package/helpers/_typography.scss
index 7248a83733..0947dd6fc8 100644
--- a/package/helpers/_typography.scss
+++ b/package/helpers/_typography.scss
@@ -142,7 +142,7 @@
         font-size: $font-size-rem; // sass-lint:disable no-duplicate-properties
       }
       line-height: $line-height;
-    } @elseif $breakpoint == "print" {
+    } @else if $breakpoint == "print" {
       @include govuk-media-query($media-type: print) {
         font-size: $font-size;
         line-height: $line-height;
diff --git a/package/package.json b/package/package.json
index 71335864df..e40bd65c3a 100644
--- a/package/package.json
+++ b/package/package.json
@@ -1,7 +1,7 @@
 {
   "name": "govuk-frontend",
   "description": "GOV.UK Frontend contains the code you need to start building a user interface for government platforms and services.",
-  "version": "2.11.0",
+  "version": "2.12.0",
   "main": "all.js",
   "sass": "all.scss",
   "engines": {
diff --git a/package/settings/_colours-organisations.scss b/package/settings/_colours-organisations.scss
index 4207be6b65..def804b2e3 100644
--- a/package/settings/_colours-organisations.scss
+++ b/package/settings/_colours-organisations.scss
@@ -31,7 +31,7 @@ $govuk-colours-organisations: (
     colour-websafe: #347da4
   ),
   "department-for-communities-and-local-government": (
-    colour: #00857e,
+    colour: #009999,
     colour-websafe: #37836e
   ),
   "department-for-culture-media-sport": (