diff --git a/app/assets/stylesheets/govuk-frontend/_all.scss b/app/assets/stylesheets/govuk-frontend/_all.scss
index 6cf2aff39..b048562cb 100644
--- a/app/assets/stylesheets/govuk-frontend/_all.scss
+++ b/app/assets/stylesheets/govuk-frontend/_all.scss
@@ -35,6 +35,7 @@ $govuk-assets-path: "/static/";
 @import "components/checkboxes/_checkboxes";
 @import "components/input/_input";
 @import "components/inset-text/_inset-text";
+@import "components/textarea/_textarea";
 
 // update to focus styles, remove when upgrading to GOVUK Frontend 3.x.x
 @import "./focus/components";
diff --git a/app/main/forms.py b/app/main/forms.py
index d688f98f1..64c121641 100644
--- a/app/main/forms.py
+++ b/app/main/forms.py
@@ -812,6 +812,49 @@ class GovukCheckboxField(BooleanField):
         return govuk_checkbox_field_widget(self, field, param_extensions=param_extensions, **kwargs)
 
 
+class GovukTextareaField(TextAreaField):
+
+    def __init__(self, label='', validators=None, param_extensions=None, **kwargs):
+        super(TextAreaField, self).__init__(label, validators, **kwargs)
+        self.param_extensions = param_extensions
+
+    # self.__call__ renders the HTML for the field by:
+    # 1. delegating to self.meta.render_field which
+    # 2. calls field.widget
+    # this bypasses that by making self.widget a method with the same interface as widget.__call__
+    def widget(self, field, param_extensions=None, **kwargs):
+        # error messages
+        error_message = None
+        if field.errors:
+            error_message = {"text": field.errors[0]}
+
+        params = {
+            "name": field.name,
+            "id": field.id,
+            "rows": 8,
+            "label": {
+                "text": field.label.text,
+                "classes": None,
+                "isPageHeading": False
+            },
+            "hint": {
+              "text": None
+            },
+            "errorMessage": error_message
+        }
+
+        # extend default params with any sent in during instantiation
+        if self.param_extensions:
+            merge_jsonlike(params, self.param_extensions)
+
+        # add any sent in though use in templates
+        if param_extensions:
+            merge_jsonlike(params, param_extensions)
+
+        return Markup(
+            render_template('components/textarea/template.njk', params=params))
+
+
 # based on work done by @richardjpope: https://github.com/richardjpope/recourse/blob/master/recourse/forms.py#L6
 class GovukCheckboxesField(SelectMultipleField):
 
@@ -2210,7 +2253,19 @@ class BrandingOptions(StripWhitespaceForm):
 
 
 class SomethingElseBrandingForm(StripWhitespaceForm):
-    something_else = TextAreaField('', validators=[DataRequired('Cannot be empty')])
+    something_else = GovukTextareaField(
+        'Describe the branding you want',
+        validators=[DataRequired('Cannot be empty')],
+        param_extensions={
+            "label": {
+                "isPageHeading": True,
+                "classes": "govuk-label--l",
+            },
+            "hint": {
+                "text": "Include links to your brand guidelines or examples of how to use your branding."
+            }
+        }
+    )
 
 
 class ServiceDataRetentionForm(StripWhitespaceForm):
diff --git a/app/templates/views/service-settings/branding/email-branding-something-else.html b/app/templates/views/service-settings/branding/email-branding-something-else.html
index c022ff9ad..c3301f6db 100644
--- a/app/templates/views/service-settings/branding/email-branding-something-else.html
+++ b/app/templates/views/service-settings/branding/email-branding-something-else.html
@@ -2,8 +2,8 @@
 {% from "components/form.html" import form_wrapper %}
 {% from "components/back-link/macro.njk" import govukBackLink %}
 {% from "components/page-footer.html" import page_footer %}
-{% from "components/page-header.html" import page_header %}
 {% from "components/textbox.html" import textbox %}
+{% from "components/textarea/macro.njk" import govukTextarea %}
 
 {% block service_page_title %}
   Describe the branding you want
@@ -17,14 +17,8 @@
 
 {% block maincolumn_content %}
 
-  {{ page_header('Describe the branding you want') }}
-
-  {% call form_wrapper() %}
-    {{ textbox(
-      form.something_else,
-        hint='Include links to your brand guidelines or examples of how to use your branding.',
-        width='1-1',
-    ) }}
+  {% call form_wrapper(class="govuk-!-margin-top-3") %}
+    {{ form.something_else }}
     <p class="form-group">We’ll email you when your branding is ready, or if we need any more information.</p>
     {{ page_footer('Request new branding') }}
   {% endcall %}
diff --git a/gulpfile.js b/gulpfile.js
index fa1128fc1..bc77c07bc 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -72,7 +72,8 @@ const copy = {
         'checkboxes',
         'radios',
         'input',
-        'inset-text'
+        'inset-text',
+        'textarea'
       ];
       let done = 0;
 
diff --git a/tests/app/main/views/test_service_settings.py b/tests/app/main/views/test_service_settings.py
index 9d7534614..07dd59a76 100644
--- a/tests/app/main/views/test_service_settings.py
+++ b/tests/app/main/views/test_service_settings.py
@@ -5704,7 +5704,7 @@ def test_submit_email_branding_something_else_page_shows_error_if_textbox_is_emp
         _follow_redirects=True,
     )
     assert normalize_spaces(page.h1.text) == 'Describe the branding you want'
-    assert normalize_spaces(page.select_one('.error-message').text) == 'Cannot be empty'
+    assert normalize_spaces(page.select_one('.govuk-error-message').text) == 'Error: Cannot be empty'
 
 
 def test_service_settings_links_to_branding_request_page_for_letters(