diff --git a/docs/installation/installing-compiled.md b/docs/installation/installing-compiled.md
index b3c073767..0f6e62f23 100644
--- a/docs/installation/installing-compiled.md
+++ b/docs/installation/installing-compiled.md
@@ -115,7 +115,7 @@ If you require any of this functionality, you should [install using npm](/docs/i
       <div class="nhsuk-width-container nhsuk-header__container">
         <div class="nhsuk-header__logo">
           <a class="nhsuk-header__link" href="/" aria-label="NHS homepage">
-            <svg class="nhsuk-logo nhsuk-logo--white" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
+            <svg class="nhsuk-logo nhsuk-logo--white" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" role="presentation" focusable="false" viewBox="0 0 40 16">
               <path fill="#fff" d="M0 0h40v16H0z"></path>
               <path fill="#005eb8" d="M3.9 1.5h4.4l2.6 9h.1l1.8-9h3.3l-2.8 13H9l-2.7-9h-.1l-1.8 9H1.1M17.3 1.5h3.6l-1 4.9h4L25 1.5h3.5l-2.7 13h-3.5l1.1-5.6h-4.1l-1.2 5.6h-3.4M37.7 4.4c-.7-.3-1.6-.6-2.9-.6-1.4 0-2.5.2-2.5 1.3 0 1.8 5.1 1.2 5.1 5.1 0 3.6-3.3 4.5-6.4 4.5-1.3 0-2.9-.3-4-.7l.8-2.7c.7.4 2.1.7 3.2.7s2.8-.2 2.8-1.5c0-2.1-5.1-1.3-5.1-5 0-3.4 2.9-4.4 5.8-4.4 1.6 0 3.1.2 4 .6"></path>
               <image src="https://assets.nhs.uk/images/nhs-logo.png" xlink:href=""></image>
diff --git a/packages/assets/logos/logo-nhs.svg b/packages/assets/logos/logo-nhs.svg
index 816784e2e..26c1aa5de 100644
--- a/packages/assets/logos/logo-nhs.svg
+++ b/packages/assets/logos/logo-nhs.svg
@@ -1,4 +1,4 @@
-<svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
+<svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" role="presentation" focusable="false" viewBox="0 0 40 16">
   <path fill="#005eb8" d="M0 0h40v16H0z"></path>
   <path fill="#fff" d="M3.9 1.5h4.4l2.6 9h.1l1.8-9h3.3l-2.8 13H9l-2.7-9h-.1l-1.8 9H1.1M17.3 1.5h3.6l-1 4.9h4L25 1.5h3.5l-2.7 13h-3.5l1.1-5.6h-4.1l-1.2 5.6h-3.4M37.7 4.4c-.7-.3-1.6-.6-2.9-.6-1.4 0-2.5.2-2.5 1.3 0 1.8 5.1 1.2 5.1 5.1 0 3.6-3.3 4.5-6.4 4.5-1.3 0-2.9-.3-4-.7l.8-2.7c.7.4 2.1.7 3.2.7s2.8-.2 2.8-1.5c0-2.1-5.1-1.3-5.1-5 0-3.4 2.9-4.4 5.8-4.4 1.6 0 3.1.2 4 .6"></path>
   <image xlink:href="" src="https://assets.nhs.uk/images/nhs-logo.png"></image>
diff --git a/packages/components/header/README.md b/packages/components/header/README.md
index c92eed16e..9cfd0e5c1 100644
--- a/packages/components/header/README.md
+++ b/packages/components/header/README.md
@@ -22,7 +22,7 @@ compiled JavaScript for all components `nhsuk.min.js` or the individual componen
   <div class="nhsuk-width-container nhsuk-header__container">
     <div class="nhsuk-header__logo">
       <a class="nhsuk-header__link" href="/" aria-label="NHS homepage">
-        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
+        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" role="presentation" focusable="false" viewBox="0 0 40 16">
           <path class="nhsuk-logo__background" d="M0 0h40v16H0z"></path>
           <path class="nhsuk-logo__text" d="M3.9 1.5h4.4l2.6 9h.1l1.8-9h3.3l-2.8 13H9l-2.7-9h-.1l-1.8 9H1.1M17.3 1.5h3.6l-1 4.9h4L25 1.5h3.5l-2.7 13h-3.5l1.1-5.6h-4.1l-1.2 5.6h-3.4M37.7 4.4c-.7-.3-1.6-.6-2.9-.6-1.4 0-2.5.2-2.5 1.3 0 1.8 5.1 1.2 5.1 5.1 0 3.6-3.3 4.5-6.4 4.5-1.3 0-2.9-.3-4-.7l.8-2.7c.7.4 2.1.7 3.2.7s2.8-.2 2.8-1.5c0-2.1-5.1-1.3-5.1-5 0-3.4 2.9-4.4 5.8-4.4 1.6 0 3.1.2 4 .6"></path>
           <image src="https://assets.nhs.uk/images/nhs-logo.png" xlink:href=""></image>
@@ -173,7 +173,7 @@ compiled JavaScript for all components `nhsuk.min.js` or the individual componen
   <div class="nhsuk-width-container nhsuk-header__container">
     <div class="nhsuk-header__logo">
       <a class="nhsuk-header__link" href="/" aria-label="NHS homepage">
-        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
+        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" role="presentation" focusable="false" viewBox="0 0 40 16">
           <path class="nhsuk-logo__background" d="M0 0h40v16H0z"></path>
           <path class="nhsuk-logo__text" d="M3.9 1.5h4.4l2.6 9h.1l1.8-9h3.3l-2.8 13H9l-2.7-9h-.1l-1.8 9H1.1M17.3 1.5h3.6l-1 4.9h4L25 1.5h3.5l-2.7 13h-3.5l1.1-5.6h-4.1l-1.2 5.6h-3.4M37.7 4.4c-.7-.3-1.6-.6-2.9-.6-1.4 0-2.5.2-2.5 1.3 0 1.8 5.1 1.2 5.1 5.1 0 3.6-3.3 4.5-6.4 4.5-1.3 0-2.9-.3-4-.7l.8-2.7c.7.4 2.1.7 3.2.7s2.8-.2 2.8-1.5c0-2.1-5.1-1.3-5.1-5 0-3.4 2.9-4.4 5.8-4.4 1.6 0 3.1.2 4 .6"></path>
           <image src="https://assets.nhs.uk/images/nhs-logo.png" xlink:href=""></image>
@@ -297,7 +297,7 @@ compiled JavaScript for all components `nhsuk.min.js` or the individual componen
   <div class="nhsuk-width-container nhsuk-header__container">
     <div class="nhsuk-header__logo">
       <a class="nhsuk-header__link" href="/" aria-label="NHS homepage">
-        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
+        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" role="presentation" focusable="false" viewBox="0 0 40 16">
           <path class="nhsuk-logo__background" d="M0 0h40v16H0z"></path>
           <path class="nhsuk-logo__text" d="M3.9 1.5h4.4l2.6 9h.1l1.8-9h3.3l-2.8 13H9l-2.7-9h-.1l-1.8 9H1.1M17.3 1.5h3.6l-1 4.9h4L25 1.5h3.5l-2.7 13h-3.5l1.1-5.6h-4.1l-1.2 5.6h-3.4M37.7 4.4c-.7-.3-1.6-.6-2.9-.6-1.4 0-2.5.2-2.5 1.3 0 1.8 5.1 1.2 5.1 5.1 0 3.6-3.3 4.5-6.4 4.5-1.3 0-2.9-.3-4-.7l.8-2.7c.7.4 2.1.7 3.2.7s2.8-.2 2.8-1.5c0-2.1-5.1-1.3-5.1-5 0-3.4 2.9-4.4 5.8-4.4 1.6 0 3.1.2 4 .6"></path>
           <image src="https://assets.nhs.uk/images/nhs-logo.png" xlink:href=""></image>
@@ -360,7 +360,7 @@ compiled JavaScript for all components `nhsuk.min.js` or the individual componen
   <div class="nhsuk-width-container nhsuk-header__container">
     <div class="nhsuk-header__logo nhsuk-header__logo--only">
       <a class="nhsuk-header__link" href="/" aria-label="NHS homepage">
-        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
+        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" role="presentation" focusable="false" viewBox="0 0 40 16">
           <path class="nhsuk-logo__background" d="M0 0h40v16H0z"></path>
           <path class="nhsuk-logo__text" d="M3.9 1.5h4.4l2.6 9h.1l1.8-9h3.3l-2.8 13H9l-2.7-9h-.1l-1.8 9H1.1M17.3 1.5h3.6l-1 4.9h4L25 1.5h3.5l-2.7 13h-3.5l1.1-5.6h-4.1l-1.2 5.6h-3.4M37.7 4.4c-.7-.3-1.6-.6-2.9-.6-1.4 0-2.5.2-2.5 1.3 0 1.8 5.1 1.2 5.1 5.1 0 3.6-3.3 4.5-6.4 4.5-1.3 0-2.9-.3-4-.7l.8-2.7c.7.4 2.1.7 3.2.7s2.8-.2 2.8-1.5c0-2.1-5.1-1.3-5.1-5 0-3.4 2.9-4.4 5.8-4.4 1.6 0 3.1.2 4 .6"></path>
           <image src="https://assets.nhs.uk/images/nhs-logo.png" xlink:href=""></image>
@@ -396,7 +396,7 @@ compiled JavaScript for all components `nhsuk.min.js` or the individual componen
   <div class="nhsuk-width-container nhsuk-header__container">
     <div class="nhsuk-header__logo nhsuk-header__logo--only">
       <a class="nhsuk-header__link" href="/" aria-label="NHS homepage">
-        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
+        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" role="presentation" focusable="false" viewBox="0 0 40 16">
           <path class="nhsuk-logo__background" d="M0 0h40v16H0z"></path>
           <path class="nhsuk-logo__text" d="M3.9 1.5h4.4l2.6 9h.1l1.8-9h3.3l-2.8 13H9l-2.7-9h-.1l-1.8 9H1.1M17.3 1.5h3.6l-1 4.9h4L25 1.5h3.5l-2.7 13h-3.5l1.1-5.6h-4.1l-1.2 5.6h-3.4M37.7 4.4c-.7-.3-1.6-.6-2.9-.6-1.4 0-2.5.2-2.5 1.3 0 1.8 5.1 1.2 5.1 5.1 0 3.6-3.3 4.5-6.4 4.5-1.3 0-2.9-.3-4-.7l.8-2.7c.7.4 2.1.7 3.2.7s2.8-.2 2.8-1.5c0-2.1-5.1-1.3-5.1-5 0-3.4 2.9-4.4 5.8-4.4 1.6 0 3.1.2 4 .6"></path>
           <image src="https://assets.nhs.uk/images/nhs-logo.png" xlink:href=""></image>
@@ -433,7 +433,7 @@ compiled JavaScript for all components `nhsuk.min.js` or the individual componen
   <div class="nhsuk-width-container nhsuk-header__container">
     <div class="nhsuk-header__logo nhsuk-header__logo--only">
       <a class="nhsuk-header__link" href="/" aria-label="NHS homepage">
-        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
+        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" role="presentation" focusable="false" viewBox="0 0 40 16">
           <path class="nhsuk-logo__background" d="M0 0h40v16H0z"></path>
           <path class="nhsuk-logo__text" d="M3.9 1.5h4.4l2.6 9h.1l1.8-9h3.3l-2.8 13H9l-2.7-9h-.1l-1.8 9H1.1M17.3 1.5h3.6l-1 4.9h4L25 1.5h3.5l-2.7 13h-3.5l1.1-5.6h-4.1l-1.2 5.6h-3.4M37.7 4.4c-.7-.3-1.6-.6-2.9-.6-1.4 0-2.5.2-2.5 1.3 0 1.8 5.1 1.2 5.1 5.1 0 3.6-3.3 4.5-6.4 4.5-1.3 0-2.9-.3-4-.7l.8-2.7c.7.4 2.1.7 3.2.7s2.8-.2 2.8-1.5c0-2.1-5.1-1.3-5.1-5 0-3.4 2.9-4.4 5.8-4.4 1.6 0 3.1.2 4 .6"></path>
           <image src="https://assets.nhs.uk/images/nhs-logo.png" xlink:href=""></image>
@@ -474,7 +474,7 @@ compiled JavaScript for all components `nhsuk.min.js` or the individual componen
   <div class="nhsuk-width-container nhsuk-header__container">
     <div class="nhsuk-header__logo nhsuk-header__logo--only">
       <a class="nhsuk-header__link" href="/" aria-label="NHS homepage">
-        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
+        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" role="presentation" focusable="false" viewBox="0 0 40 16">
           <path class="nhsuk-logo__background" d="M0 0h40v16H0z"></path>
           <path class="nhsuk-logo__text" d="M3.9 1.5h4.4l2.6 9h.1l1.8-9h3.3l-2.8 13H9l-2.7-9h-.1l-1.8 9H1.1M17.3 1.5h3.6l-1 4.9h4L25 1.5h3.5l-2.7 13h-3.5l1.1-5.6h-4.1l-1.2 5.6h-3.4M37.7 4.4c-.7-.3-1.6-.6-2.9-.6-1.4 0-2.5.2-2.5 1.3 0 1.8 5.1 1.2 5.1 5.1 0 3.6-3.3 4.5-6.4 4.5-1.3 0-2.9-.3-4-.7l.8-2.7c.7.4 2.1.7 3.2.7s2.8-.2 2.8-1.5c0-2.1-5.1-1.3-5.1-5 0-3.4 2.9-4.4 5.8-4.4 1.6 0 3.1.2 4 .6"></path>
           <image src="https://assets.nhs.uk/images/nhs-logo.png" xlink:href=""></image>
@@ -513,7 +513,7 @@ compiled JavaScript for all components `nhsuk.min.js` or the individual componen
   <div class="nhsuk-width-container nhsuk-header__container">
     <div class="nhsuk-header__logo">
       <a class="nhsuk-header__link" href="/" aria-label="Anytown Anyplace Hospital Anywhere NHS Foundation Trust homepage">
-        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
+        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" role="presentation" focusable="false" viewBox="0 0 40 16">
           <path class="nhsuk-logo__background" d="M0 0h40v16H0z"></path>
           <path class="nhsuk-logo__text" d="M3.9 1.5h4.4l2.6 9h.1l1.8-9h3.3l-2.8 13H9l-2.7-9h-.1l-1.8 9H1.1M17.3 1.5h3.6l-1 4.9h4L25 1.5h3.5l-2.7 13h-3.5l1.1-5.6h-4.1l-1.2 5.6h-3.4M37.7 4.4c-.7-.3-1.6-.6-2.9-.6-1.4 0-2.5.2-2.5 1.3 0 1.8 5.1 1.2 5.1 5.1 0 3.6-3.3 4.5-6.4 4.5-1.3 0-2.9-.3-4-.7l.8-2.7c.7.4 2.1.7 3.2.7s2.8-.2 2.8-1.5c0-2.1-5.1-1.3-5.1-5 0-3.4 2.9-4.4 5.8-4.4 1.6 0 3.1.2 4 .6"></path>
           <image src="https://assets.nhs.uk/images/nhs-logo.png" xlink:href=""></image>
@@ -669,7 +669,7 @@ compiled JavaScript for all components `nhsuk.min.js` or the individual componen
   <div class="nhsuk-width-container nhsuk-header__container">
     <div class="nhsuk-header__logo">
       <a class="nhsuk-header__link" href="/" aria-label="Anytown Anyplace Anywhere NHS Foundation Trust homepage">
-        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
+        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" role="presentation" focusable="false" viewBox="0 0 40 16">
           <path class="nhsuk-logo__background" d="M0 0h40v16H0z"></path>
           <path class="nhsuk-logo__text" d="M3.9 1.5h4.4l2.6 9h.1l1.8-9h3.3l-2.8 13H9l-2.7-9h-.1l-1.8 9H1.1M17.3 1.5h3.6l-1 4.9h4L25 1.5h3.5l-2.7 13h-3.5l1.1-5.6h-4.1l-1.2 5.6h-3.4M37.7 4.4c-.7-.3-1.6-.6-2.9-.6-1.4 0-2.5.2-2.5 1.3 0 1.8 5.1 1.2 5.1 5.1 0 3.6-3.3 4.5-6.4 4.5-1.3 0-2.9-.3-4-.7l.8-2.7c.7.4 2.1.7 3.2.7s2.8-.2 2.8-1.5c0-2.1-5.1-1.3-5.1-5 0-3.4 2.9-4.4 5.8-4.4 1.6 0 3.1.2 4 .6"></path>
           <image src="https://assets.nhs.uk/images/nhs-logo.png" xlink:href=""></image>
@@ -826,7 +826,7 @@ compiled JavaScript for all components `nhsuk.min.js` or the individual componen
   <div class="nhsuk-width-container nhsuk-header__container">
     <div class="nhsuk-header__logo">
       <a class="nhsuk-header__link" href="/" aria-label="Anytown Anyplace Anywhere NHS Foundation Trust homepage">
-        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
+        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" role="presentation" focusable="false" viewBox="0 0 40 16">
           <path class="nhsuk-logo__background" d="M0 0h40v16H0z"></path>
           <path class="nhsuk-logo__text" d="M3.9 1.5h4.4l2.6 9h.1l1.8-9h3.3l-2.8 13H9l-2.7-9h-.1l-1.8 9H1.1M17.3 1.5h3.6l-1 4.9h4L25 1.5h3.5l-2.7 13h-3.5l1.1-5.6h-4.1l-1.2 5.6h-3.4M37.7 4.4c-.7-.3-1.6-.6-2.9-.6-1.4 0-2.5.2-2.5 1.3 0 1.8 5.1 1.2 5.1 5.1 0 3.6-3.3 4.5-6.4 4.5-1.3 0-2.9-.3-4-.7l.8-2.7c.7.4 2.1.7 3.2.7s2.8-.2 2.8-1.5c0-2.1-5.1-1.3-5.1-5 0-3.4 2.9-4.4 5.8-4.4 1.6 0 3.1.2 4 .6"></path>
           <image src="https://assets.nhs.uk/images/nhs-logo.png" xlink:href=""></image>
diff --git a/packages/components/header/template.njk b/packages/components/header/template.njk
index c8700052a..960a5ba8b 100644
--- a/packages/components/header/template.njk
+++ b/packages/components/header/template.njk
@@ -14,7 +14,7 @@
         {%- if params.organisation.logoURL %}
         <img class="nhsuk-org-logo" src="{{ baseUrl }}{{ params.organisation.logoURL }}" alt=""/>
         {%- else -%}
-        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
+        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" role="presentation" focusable="false" viewBox="0 0 40 16">
           <path class="nhsuk-logo__background" d="M0 0h40v16H0z"></path>
           <path class="nhsuk-logo__text" d="M3.9 1.5h4.4l2.6 9h.1l1.8-9h3.3l-2.8 13H9l-2.7-9h-.1l-1.8 9H1.1M17.3 1.5h3.6l-1 4.9h4L25 1.5h3.5l-2.7 13h-3.5l1.1-5.6h-4.1l-1.2 5.6h-3.4M37.7 4.4c-.7-.3-1.6-.6-2.9-.6-1.4 0-2.5.2-2.5 1.3 0 1.8 5.1 1.2 5.1 5.1 0 3.6-3.3 4.5-6.4 4.5-1.3 0-2.9-.3-4-.7l.8-2.7c.7.4 2.1.7 3.2.7s2.8-.2 2.8-1.5c0-2.1-5.1-1.3-5.1-5 0-3.4 2.9-4.4 5.8-4.4 1.6 0 3.1.2 4 .6"></path>
           <image src="https://assets.nhs.uk/images/nhs-logo.png" xlink:href=""></image>
@@ -25,7 +25,7 @@
       </a>
       {%- else -%}
       <a class="nhsuk-header__link{% if params.service %} nhsuk-header__link--service {% endif %}" href="{% if params.homeHref %}{{ params.homeHref }}{% else %}/{% endif %}" aria-label="{% if params.ariaLabel %}{{ params.ariaLabel }}{% else %}NHS homepage{% endif %}">
-        <svg class="nhsuk-logo" xmlns="http://www.w3.org/2000/svg" role="presentation" focusable="false" viewBox="0 0 40 16">
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