diff --git a/app/templates/error/404.html b/app/templates/error/404.html
index ebcd6b5b1..3768b37d7 100644
--- a/app/templates/error/404.html
+++ b/app/templates/error/404.html
@@ -3,7 +3,7 @@
 {% block maincolumn_content %}
     <div class="grid-row">
       <div class="column-two-thirds">
-        <h1 class="heading-xlarge">
+        <h1 class="heading-large">
           Page could not be found
         </h1>
         <p>
diff --git a/app/templates/error/500.html b/app/templates/error/500.html
index 9bc493ca4..b6955d925 100644
--- a/app/templates/error/500.html
+++ b/app/templates/error/500.html
@@ -3,7 +3,7 @@
 {% block maincolumn_content %}
   <div class="grid-row">
     <div class="column-two-thirds">
-      <h1 class="heading-xlarge">
+      <h1 class="heading-large">
         Sorry, we're experiencing technical difficulties
       </h1>
       <p>Try again later.</p>
diff --git a/app/templates/views/add-service.html b/app/templates/views/add-service.html
index 5323d3f87..eb1e4af9c 100644
--- a/app/templates/views/add-service.html
+++ b/app/templates/views/add-service.html
@@ -11,7 +11,7 @@ GOV.UK Notify | Set up service
 <div class="grid-row">
   <div class="column-two-thirds">
 
-    <h1 class="heading-xlarge">
+    <h1 class="heading-large">
       {{ heading }}
     </h1>
 
diff --git a/app/templates/views/api-keys.html b/app/templates/views/api-keys.html
index 477eaebf8..1ea1d7b0c 100644
--- a/app/templates/views/api-keys.html
+++ b/app/templates/views/api-keys.html
@@ -7,7 +7,7 @@
 
 {% block maincolumn_content %}
 
-  <h1 class="heading-xlarge">
+  <h1 class="heading-large">
     API keys
   </h1>
 
diff --git a/app/templates/views/api-keys/create.html b/app/templates/views/api-keys/create.html
index 570a54194..01c4b59ad 100644
--- a/app/templates/views/api-keys/create.html
+++ b/app/templates/views/api-keys/create.html
@@ -8,7 +8,7 @@
 
 {% block maincolumn_content %}
 
-  <h1 class="heading-xlarge">
+  <h1 class="heading-large">
     Add a new API key
   </h1>
 
diff --git a/app/templates/views/api-keys/revoke.html b/app/templates/views/api-keys/revoke.html
index abf066c65..101885a17 100644
--- a/app/templates/views/api-keys/revoke.html
+++ b/app/templates/views/api-keys/revoke.html
@@ -11,7 +11,7 @@
     <div class="grid-row">
       <div class="column-two-thirds">
 
-        <h1 class="heading-xlarge">
+        <h1 class="heading-large">
           Revoke API key
         </h1>
 
diff --git a/app/templates/views/api-keys/show.html b/app/templates/views/api-keys/show.html
index a19a038b2..13f451339 100644
--- a/app/templates/views/api-keys/show.html
+++ b/app/templates/views/api-keys/show.html
@@ -11,7 +11,7 @@
     <div class="grid-row">
       <div class="column-two-thirds">
 
-        <h1 class="heading-xlarge">
+        <h1 class="heading-large">
           New API key
         </h1>
 
diff --git a/app/templates/views/check-email.html b/app/templates/views/check-email.html
index 07452d490..167ee59d3 100644
--- a/app/templates/views/check-email.html
+++ b/app/templates/views/check-email.html
@@ -6,7 +6,7 @@ GOV.UK Notify | Send email
 
 {% block maincolumn_content %}
 
-    <h1 class="heading-xlarge">Send email</h1>
+    <h1 class="heading-large">Send email</h1>
 
     <p>This page will be where we check the email messages we're about to send</p>
 
diff --git a/app/templates/views/check-sms.html b/app/templates/views/check-sms.html
index c6ae85aee..aef0b66f0 100644
--- a/app/templates/views/check-sms.html
+++ b/app/templates/views/check-sms.html
@@ -10,7 +10,7 @@
 
 {% block maincolumn_content %}
 
-  <h1 class="heading-xlarge">Send text messages</h1>
+  <h1 class="heading-large">Send text messages</h1>
 
   {% if upload_result.rejects %}
     <h3 class="heading-small">The following numbers are invalid</h3>
diff --git a/app/templates/views/choose-service.html b/app/templates/views/choose-service.html
index efb53df79..429eb83bf 100644
--- a/app/templates/views/choose-service.html
+++ b/app/templates/views/choose-service.html
@@ -7,7 +7,7 @@
 
 {% block maincolumn_content %}
 
-  <h1 class="heading-xlarge">
+  <h1 class="heading-large">
     Choose service
   </h1>
 
diff --git a/app/templates/views/documentation.html b/app/templates/views/documentation.html
index 8dc254e18..3472631a2 100644
--- a/app/templates/views/documentation.html
+++ b/app/templates/views/documentation.html
@@ -11,7 +11,7 @@ GOV.UK Notify | API keys and documentation
 <div class="grid-row">
     <div class="column-two-thirds">
 
-        <h1 class="heading-xlarge">
+        <h1 class="heading-large">
             Developer documentation
         </h1>
 
diff --git a/app/templates/views/edit-template.html b/app/templates/views/edit-template.html
index daeab9d4a..f2776751c 100644
--- a/app/templates/views/edit-template.html
+++ b/app/templates/views/edit-template.html
@@ -8,7 +8,7 @@ GOV.UK Notify | Edit template
 
 {% block maincolumn_content %}
 
-    <h1 class="heading-xlarge">{{ h1 }}</h1>
+    <h1 class="heading-large">{{ h1 }}</h1>
 
     <form method="post">
       {{ textbox(form.name) }}
diff --git a/app/templates/views/email-not-received.html b/app/templates/views/email-not-received.html
index 935791da2..a8400a05c 100644
--- a/app/templates/views/email-not-received.html
+++ b/app/templates/views/email-not-received.html
@@ -10,7 +10,7 @@ GOV.UK Notify
 
 <div class="grid-row">
   <div class="column-two-thirds">
-    <h1 class="heading-xlarge">Check your email address</h1>
+    <h1 class="heading-large">Check your email address</h1>
 
     <p>Check your email address is correct and then resend the confirmation code.</p>
 
diff --git a/app/templates/views/forgot-password.html b/app/templates/views/forgot-password.html
index b8ec775b5..e2d8b6d27 100644
--- a/app/templates/views/forgot-password.html
+++ b/app/templates/views/forgot-password.html
@@ -10,7 +10,7 @@ GOV.UK Notify
 
 <div class="grid-row">
   <div class="column-two-thirds">
-    <h1 class="heading-xlarge">Create a new password</h1>
+    <h1 class="heading-large">Create a new password</h1>
 
     <p>If you have forgotten your password, we can send you an email to create a new password.</p>
 
diff --git a/app/templates/views/jobs.html b/app/templates/views/jobs.html
index 373cb2fbb..db8c6c7d5 100644
--- a/app/templates/views/jobs.html
+++ b/app/templates/views/jobs.html
@@ -7,7 +7,7 @@ GOV.UK Notify | Notifications activity
 
 {% block maincolumn_content %}
 
-    <h1 class="heading-xlarge">Notifications activity</h1>
+    <h1 class="heading-large">Notifications activity</h1>
 
     {% call(item) list_table(
       jobs,
diff --git a/app/templates/views/manage-templates.html b/app/templates/views/manage-templates.html
index 494ec6b9e..0c4e9040f 100644
--- a/app/templates/views/manage-templates.html
+++ b/app/templates/views/manage-templates.html
@@ -12,7 +12,7 @@ GOV.UK Notify | Manage templates
     <div class="grid-row">
       <div class="column-two-thirds">
 
-        <h1 class="heading-xlarge">Templates</h1>
+        <h1 class="heading-large">Templates</h1>
 
         <p>
           <a href="{{ url_for('.add_service_template', service_id=service_id) }}">Add new template</a>
diff --git a/app/templates/views/manage-users.html b/app/templates/views/manage-users.html
index 13c7f73aa..1a8e1a5ea 100644
--- a/app/templates/views/manage-users.html
+++ b/app/templates/views/manage-users.html
@@ -7,7 +7,7 @@ GOV.UK Notify | Manage users
 
 {% block maincolumn_content %}
 
-    <h1 class="heading-xlarge">Manage users</h1>
+    <h1 class="heading-large">Manage users</h1>
 
     <p>Here's where you can add or remove users of a service.</p>
 
diff --git a/app/templates/views/new-password.html b/app/templates/views/new-password.html
index fdd3d968a..8956f612e 100644
--- a/app/templates/views/new-password.html
+++ b/app/templates/views/new-password.html
@@ -11,7 +11,7 @@ GOV.UK Notify
 <div class="grid-row">
   <div class="column-two-thirds">
     {% if user %}
-      <h1 class="heading-xlarge">
+      <h1 class="heading-large">
         Create a new password
       </h1>
       <p>
diff --git a/app/templates/views/password-reset-sent.html b/app/templates/views/password-reset-sent.html
index b00a1f7de..4fcb6cdbd 100644
--- a/app/templates/views/password-reset-sent.html
+++ b/app/templates/views/password-reset-sent.html
@@ -8,7 +8,7 @@ GOV.UK Notify |
 
 <div class="grid-row">
   <div class="column-two-thirds">
-    <h1 class="heading-xlarge">GOV.UK Notify</h1>
+    <h1 class="heading-large">GOV.UK Notify</h1>
 
     <p>You have been sent an email containing a link to reset your password.</p>
 
diff --git a/app/templates/views/register-from-invite.html b/app/templates/views/register-from-invite.html
index 694f957e3..b77c1b589 100644
--- a/app/templates/views/register-from-invite.html
+++ b/app/templates/views/register-from-invite.html
@@ -8,7 +8,7 @@ GOV.UK Notify | Create a user account
 
 <div class="grid-row">
   <div class="column-two-thirds">
-    <h1 class="heading-xlarge">Create an account</h1>
+    <h1 class="heading-large">Create an account</h1>
 
     <p>If you've used GOV.UK Notify before, <a href="">sign in to your account</a>.</p>
 
diff --git a/app/templates/views/register.html b/app/templates/views/register.html
index 76917acc8..bb99fa881 100644
--- a/app/templates/views/register.html
+++ b/app/templates/views/register.html
@@ -10,7 +10,7 @@ GOV.UK Notify | Create an account
 
 <div class="grid-row">
   <div class="column-two-thirds">
-    <h1 class="heading-xlarge">Create an account</h1>
+    <h1 class="heading-large">Create an account</h1>
 
     <p>If you've used GOV.UK Notify before, <a href="{{ url_for('.sign_in') }}">sign in to your account</a>.</p>
 
diff --git a/app/templates/views/send-email.html b/app/templates/views/send-email.html
index fd4f81830..31dd3bbe4 100644
--- a/app/templates/views/send-email.html
+++ b/app/templates/views/send-email.html
@@ -6,7 +6,7 @@ GOV.UK Notify | Send email
 
 {% block maincolumn_content %}
 
-    <h1 class="heading-xlarge">Send email</h1>
+    <h1 class="heading-large">Send email</h1>
 
     <p>This page will be where we construct email messages</p>
 
diff --git a/app/templates/views/send-sms.html b/app/templates/views/send-sms.html
index 4ec63b201..408580744 100644
--- a/app/templates/views/send-sms.html
+++ b/app/templates/views/send-sms.html
@@ -13,7 +13,7 @@
     <div class="grid-row">
       <div class="column-three-quarters">
 
-        <h1 class="heading-xlarge">Send text messages</h1>
+        <h1 class="heading-large">Send text messages</h1>
 
         <fieldset class='form-group'>
           <legend class="heading-medium">1. Choose text message template</legend>
diff --git a/app/templates/views/service-settings.html b/app/templates/views/service-settings.html
index 2365b9021..6bced7eab 100644
--- a/app/templates/views/service-settings.html
+++ b/app/templates/views/service-settings.html
@@ -7,7 +7,7 @@
 
 {% block maincolumn_content %}
 
-    <h1 class="heading-xlarge">Service settings</h1>
+    <h1 class="heading-large">Service settings</h1>
 
     {{ browse_list([
       {
diff --git a/app/templates/views/service-settings/confirm.html b/app/templates/views/service-settings/confirm.html
index 5f10e9c45..dee31453d 100644
--- a/app/templates/views/service-settings/confirm.html
+++ b/app/templates/views/service-settings/confirm.html
@@ -8,7 +8,7 @@ GOV.UK Notify | Service settings
 
 {% block maincolumn_content %}
 
-  <h1 class="heading-xlarge">{{ heading }}</h1>
+  <h1 class="heading-large">{{ heading }}</h1>
 
   <div class="grid-row">
     <div class="column-three-quarters">
diff --git a/app/templates/views/service-settings/delete.html b/app/templates/views/service-settings/delete.html
index 49401d52e..8d2641d01 100644
--- a/app/templates/views/service-settings/delete.html
+++ b/app/templates/views/service-settings/delete.html
@@ -12,7 +12,7 @@
   <div class="grid-row">
     <div class="column-three-quarters">
 
-      <h1 class="heading-xlarge">Delete this service from GOV.UK Notify</h1>
+      <h1 class="heading-large">Delete this service from GOV.UK Notify</h1>
 
       <p>
         This can’t be undone. You will lose:
diff --git a/app/templates/views/service-settings/name.html b/app/templates/views/service-settings/name.html
index 1f133d4c2..67f87b619 100644
--- a/app/templates/views/service-settings/name.html
+++ b/app/templates/views/service-settings/name.html
@@ -8,7 +8,7 @@ GOV.UK Notify | Service settings
 
 {% block maincolumn_content %}
 
-  <h1 class="heading-xlarge">Change your service name</h1>
+  <h1 class="heading-large">Change your service name</h1>
 
   <div class="grid-row">
     <div class="column-three-quarters">
diff --git a/app/templates/views/service-settings/request-to-go-live.html b/app/templates/views/service-settings/request-to-go-live.html
index 1b9c798e5..104a84052 100644
--- a/app/templates/views/service-settings/request-to-go-live.html
+++ b/app/templates/views/service-settings/request-to-go-live.html
@@ -7,7 +7,7 @@
 
 {% block maincolumn_content %}
 
-  <h1 class="heading-xlarge">Request to go live</h1>
+  <h1 class="heading-large">Request to go live</h1>
 
   <div class="grid-row">
     <div class="column-three-quarters">
diff --git a/app/templates/views/service-settings/status.html b/app/templates/views/service-settings/status.html
index cda74afab..ba5ef5421 100644
--- a/app/templates/views/service-settings/status.html
+++ b/app/templates/views/service-settings/status.html
@@ -7,7 +7,7 @@ GOV.UK Notify | Service settings
 
 {% block maincolumn_content %}
 
-  <h1 class="heading-xlarge">Temporarily suspend API keys</h1>
+  <h1 class="heading-large">Temporarily suspend API keys</h1>
 
   <div class="grid-row">
     <div class="column-three-quarters">
diff --git a/app/templates/views/signin.html b/app/templates/views/signin.html
index a0638583a..845edeb29 100644
--- a/app/templates/views/signin.html
+++ b/app/templates/views/signin.html
@@ -10,7 +10,7 @@ Sign in
 
 <div class="grid-row">
   <div class="column-two-thirds">
-    <h1 class="heading-xlarge">Sign in</h1>
+    <h1 class="heading-large">Sign in</h1>
 
     <p>If you do not have an account, you can <a href="register">register for one now</a>.</p>
 
diff --git a/app/templates/views/styleguide.html b/app/templates/views/styleguide.html
index 15bfa58df..9c6783243 100644
--- a/app/templates/views/styleguide.html
+++ b/app/templates/views/styleguide.html
@@ -15,7 +15,7 @@
 
 {% block maincolumn_content %}
 
-  <h1 class="heading-xlarge">
+  <h1 class="heading-large">
     Styleguide
   </h1>
 
diff --git a/app/templates/views/text-not-received-2.html b/app/templates/views/text-not-received-2.html
index 550e465a6..01b93bdfe 100644
--- a/app/templates/views/text-not-received-2.html
+++ b/app/templates/views/text-not-received-2.html
@@ -10,7 +10,7 @@ GOV.UK Notify
 
 <div class="grid-row">
   <div class="column-two-thirds">
-    <h1 class="heading-xlarge">Check your mobile number</h1>
+    <h1 class="heading-large">Check your mobile number</h1>
 
     <p>Check your mobile phone number is correct and then resend the confirmation code.</p>
 
diff --git a/app/templates/views/text-not-received.html b/app/templates/views/text-not-received.html
index fabe676e8..c2e577819 100644
--- a/app/templates/views/text-not-received.html
+++ b/app/templates/views/text-not-received.html
@@ -10,7 +10,7 @@ GOV.UK Notify
 
 <div class="grid-row">
   <div class="column-two-thirds">
-    <h1 class="heading-xlarge">Check your mobile number</h1>
+    <h1 class="heading-large">Check your mobile number</h1>
 
     <p>Check your mobile phone number is correct and then resend the confirmation code.</p>
 
diff --git a/app/templates/views/two-factor.html b/app/templates/views/two-factor.html
index 6aa08b29f..cfcd86d89 100644
--- a/app/templates/views/two-factor.html
+++ b/app/templates/views/two-factor.html
@@ -10,7 +10,7 @@ GOV.UK Notify | Text verification
 
 <div class="grid-row">
   <div class="column-two-thirds">
-    <h1 class="heading-xlarge">Text verification</h1>
+    <h1 class="heading-large">Text verification</h1>
 
     <p>We've sent you a text message with a verification code.</p>
 
diff --git a/app/templates/views/user-profile.html b/app/templates/views/user-profile.html
index 0e8b0cd69..6af27f604 100644
--- a/app/templates/views/user-profile.html
+++ b/app/templates/views/user-profile.html
@@ -7,7 +7,7 @@
 
 {% block maincolumn_content %}
 
-  <h1 class="heading-xlarge">Your profile</h1>
+  <h1 class="heading-large">Your profile</h1>
 
   {% call(item) list_table(
     [
diff --git a/app/templates/views/user-profile/authenticate.html b/app/templates/views/user-profile/authenticate.html
index 4226749da..645dfb956 100644
--- a/app/templates/views/user-profile/authenticate.html
+++ b/app/templates/views/user-profile/authenticate.html
@@ -8,7 +8,7 @@ GOV.UK Notify | Service settings
 
 {% block fullwidth_content %}
 
-  <h1 class="heading-xlarge">Change your {{ thing }}</h1>
+  <h1 class="heading-large">Change your {{ thing }}</h1>
 
   <div class="grid-row">
     <div class="column-three-quarters">
diff --git a/app/templates/views/user-profile/change-password.html b/app/templates/views/user-profile/change-password.html
index b8136bdd6..3669dd10c 100644
--- a/app/templates/views/user-profile/change-password.html
+++ b/app/templates/views/user-profile/change-password.html
@@ -8,7 +8,7 @@ GOV.UK Notify | Service settings
 
 {% block fullwidth_content %}
 
-  <h1 class="heading-xlarge">Change your password</h1>
+  <h1 class="heading-large">Change your password</h1>
 
   <div class="grid-row">
     <div class="column-three-quarters">
diff --git a/app/templates/views/user-profile/change.html b/app/templates/views/user-profile/change.html
index 3aca87428..65b44ef8b 100644
--- a/app/templates/views/user-profile/change.html
+++ b/app/templates/views/user-profile/change.html
@@ -8,7 +8,7 @@ GOV.UK Notify | Service settings
 
 {% block fullwidth_content %}
 
-  <h1 class="heading-xlarge">Change your {{ thing }}</h1>
+  <h1 class="heading-large">Change your {{ thing }}</h1>
 
   <div class="grid-row">
     {% if preamble %}
diff --git a/app/templates/views/user-profile/confirm.html b/app/templates/views/user-profile/confirm.html
index 3204937c2..069fe0e7e 100644
--- a/app/templates/views/user-profile/confirm.html
+++ b/app/templates/views/user-profile/confirm.html
@@ -8,7 +8,7 @@ GOV.UK Notify | Service settings
 
 {% block fullwidth_content %}
 
-  <h1 class="heading-xlarge">Change your {{ thing }}</h1>
+  <h1 class="heading-large">Change your {{ thing }}</h1>
 
   <div class="grid-row">
     <div class="column-three-quarters">
diff --git a/app/templates/views/verification-not-received.html b/app/templates/views/verification-not-received.html
index 19977aa77..fdd3b7275 100644
--- a/app/templates/views/verification-not-received.html
+++ b/app/templates/views/verification-not-received.html
@@ -8,7 +8,7 @@ GOV.UK Notify
 
 <div class="grid-row">
   <div class="column-two-thirds">
-    <h1 class="heading-xlarge">Resend verification code</h1>
+    <h1 class="heading-large">Resend verification code</h1>
 
     <p>Text messages sometimes take a few minutes to arrive. If you do not receive the text message, you can resend it.</p>
 
diff --git a/app/templates/views/verify-mobile.html b/app/templates/views/verify-mobile.html
index dfcae50a7..12c4028ca 100644
--- a/app/templates/views/verify-mobile.html
+++ b/app/templates/views/verify-mobile.html
@@ -8,7 +8,7 @@ GOV.UK Notify | Confirm mobile number
 
 <div class="grid-row">
   <div class="column-two-thirds">
-    <h1 class="heading-xlarge">Confirm your mobile number</h1>
+    <h1 class="heading-large">Confirm your mobile number</h1>
 
     <p>We've sent you a confirmation code by text message.</p>
 
diff --git a/app/templates/views/verify.html b/app/templates/views/verify.html
index b7a589a4e..850a92a9d 100644
--- a/app/templates/views/verify.html
+++ b/app/templates/views/verify.html
@@ -10,7 +10,7 @@ GOV.UK Notify | Confirm email address and mobile number
 
 <div class="grid-row">
   <div class="column-two-thirds">
-    <h1 class="heading-xlarge">Activate your account</h1>
+    <h1 class="heading-large">Activate your account</h1>
 
     <p>We've sent you confirmation codes by email and text message. You need to enter both codes here.</p>