diff --git a/app/templates/views/letter-jobs.html b/app/templates/views/letter-jobs.html
index 053a813af..d314acfa0 100644
--- a/app/templates/views/letter-jobs.html
+++ b/app/templates/views/letter-jobs.html
@@ -1,11 +1,11 @@
-{% extends "withoutnav_template.html" %}
+{% extends "views/platform-admin/_base_template.html" %}
 {% from "components/page-footer.html" import page_footer %}
 
 {% block per_page_title %}
   Letter jobs
 {% endblock %}
 
-{% block maincolumn_content %}
+{% block platform_admin_content %}
 
     <h1 class="heading-large">Letter jobs</h1>
 
diff --git a/app/templates/views/platform-admin/_base_template.html b/app/templates/views/platform-admin/_base_template.html
new file mode 100644
index 000000000..d48756cab
--- /dev/null
+++ b/app/templates/views/platform-admin/_base_template.html
@@ -0,0 +1,34 @@
+{% extends "withoutnav_template.html" %}
+{% from "components/textbox.html" import textbox %}
+{% from "components/checkbox.html" import checkbox %}
+{% from "components/page-footer.html" import page_footer %}
+
+{% block maincolumn_content %}
+
+  <div class="grid-row">
+    <div class="column-one-quarter">
+      <p class="heading-medium">
+        Platform admin
+      </p>
+      <nav class="navigation">
+        {% for link_text, url in [
+          ('Summary', url_for('main.platform_admin')),
+          ('Live services', url_for('main.live_services')),
+          ('Trial mode services', url_for('main.trial_services')),
+          ('Providers', url_for('main.view_providers')),
+          ('Letter jobs', url_for('main.letter_jobs'))
+        ] %}
+          <li>
+            <a href="{{ url }}">
+              {{ link_text }}
+            </a>
+          </li>
+        {% endfor %}
+      </nav>
+    </div>
+    <div class="column-three-quarters">
+      {% block platform_admin_content %}{% endblock %}
+    </div>
+  </div>
+
+{% endblock %}
diff --git a/app/templates/views/platform-admin/index.html b/app/templates/views/platform-admin/index.html
index 46c7e2c96..e5af04d3e 100644
--- a/app/templates/views/platform-admin/index.html
+++ b/app/templates/views/platform-admin/index.html
@@ -1,4 +1,4 @@
-{% extends "withoutnav_template.html" %}
+{% extends "views/platform-admin/_base_template.html" %}
 {% from "components/textbox.html" import textbox %}
 {% from "components/big-number.html" import big_number %}
 {% from "components/checkbox.html" import checkbox %}
@@ -83,22 +83,18 @@
   Platform admin
 {% endblock %}
 
-{% block maincolumn_content %}
+{% block platform_admin_content %}
 
-  <h1 class="heading-large">
-    Platform admin
-  </h1>
-
-    <details>
-      <summary>Apply filters</summary>
-      <form autocomplete="off" method="get">
-        {{ textbox(form.start_date, hint="Enter start date in format YYYY-MM-DD") }}
-        {{ textbox(form.end_date, hint="Enter end date in format YYYY-MM-DD") }}
-        {{ checkbox(form.include_from_test_key) }}
-        </br>
-        <input type="submit" class="button">
-      </form>
-    </details>
+  <details>
+    <summary>Apply filters</summary>
+    <form autocomplete="off" method="get">
+      {{ textbox(form.start_date, hint="Enter start date in format YYYY-MM-DD") }}
+      {{ textbox(form.end_date, hint="Enter end date in format YYYY-MM-DD") }}
+      {{ checkbox(form.include_from_test_key) }}
+      </br>
+      <input type="submit" class="button">
+    </form>
+  </details>
 
   {% include "views/platform-admin/_global_stats.html" %}
 
diff --git a/app/templates/views/platform-admin/services.html b/app/templates/views/platform-admin/services.html
index f57517543..d866658d1 100644
--- a/app/templates/views/platform-admin/services.html
+++ b/app/templates/views/platform-admin/services.html
@@ -1,4 +1,4 @@
-{% extends "withoutnav_template.html" %}
+{% extends "views/platform-admin/_base_template.html" %}
 {% from "components/textbox.html" import textbox %}
 {% from "components/checkbox.html" import checkbox %}
 {% from "components/page-footer.html" import page_footer %}
@@ -84,7 +84,7 @@
   {{ page_title|capitalize }}
 {% endblock %}
 
-{% block maincolumn_content %}
+{% block platform_admin_content %}
 
   <h1 class="heading-large">
     {{ page_title|capitalize }}
diff --git a/app/templates/views/providers/providers.html b/app/templates/views/providers/providers.html
index 2da7cde9d..b7320fa87 100644
--- a/app/templates/views/providers/providers.html
+++ b/app/templates/views/providers/providers.html
@@ -1,4 +1,4 @@
-{% extends "withoutnav_template.html" %}
+{% extends "views/platform-admin/_base_template.html" %}
 {% from "components/table.html" import list_table, field, text_field, link_field, right_aligned_field_heading, hidden_field_heading %}
 {% from "components/show-more.html" import show_more %}
 
@@ -6,112 +6,107 @@
 Providers
 {% endblock %}
 
-{% block maincolumn_content %}
+{% block platform_admin_content %}
 
-<div class="grid-row">
-    <div class="column-two-thirds">
-        <h1 class="heading-large">Providers</h1>
+  <h1 class="heading-large">Providers</h1>
 
-        <h2 class="heading-medium">SMS</h2>
+  <h2 class="heading-medium">SMS</h2>
 
-        {% call(item, row_number) list_table(
-            domestic_sms_providers,
-            caption="Domestic SMS providers",
-            caption_visible=False,
-            empty_message='No domestic sms providers',
-            field_headings=['Provider', 'Priority', 'Active', 'Last Updated', 'Updated By'],
-            field_headings_visible=True
-        ) %}
+  {% call(item, row_number) list_table(
+      domestic_sms_providers,
+      caption="Domestic SMS providers",
+      caption_visible=False,
+      empty_message='No domestic sms providers',
+      field_headings=['Provider', 'Priority', 'Active', 'Last Updated', 'Updated By'],
+      field_headings_visible=True
+  ) %}
 
-            {{ link_field(item.display_name, url_for('main.view_provider', provider_id=item.id)) }}
+      {{ link_field(item.display_name, url_for('main.view_provider', provider_id=item.id)) }}
 
-            {{ text_field(item.priority) }}
+      {{ text_field(item.priority) }}
 
-            {{ text_field(item.active) }}
+      {{ text_field(item.active) }}
 
-            {% if item.updated_at %}
-                {{ text_field(item.updated_at|format_datetime_short) }}
-            {% else %}
-                {{ text_field('None') }}
-            {% endif %}
+      {% if item.updated_at %}
+          {{ text_field(item.updated_at|format_datetime_short) }}
+      {% else %}
+          {{ text_field('None') }}
+      {% endif %}
 
-            {% if item.created_by %}
-                {{ text_field(item.created_by.name) }}
-            {% else %}
-                {{ text_field('None') }}
-            {% endif %}
+      {% if item.created_by %}
+          {{ text_field(item.created_by.name) }}
+      {% else %}
+          {{ text_field('None') }}
+      {% endif %}
 
-            {{ link_field('change', url_for('main.edit_provider', provider_id=item.id)) }}
+      {{ link_field('change', url_for('main.edit_provider', provider_id=item.id)) }}
 
-        {% endcall %}
+  {% endcall %}
 
-        <h2 class="heading-medium">Email</h2>
+  <h2 class="heading-medium">Email</h2>
 
-        {% call(item, row_number) list_table(
-            email_providers,
-            caption="Email providers",
-            caption_visible=False,
-            empty_message='No email providers',
-            field_headings=['Provider', 'Priority', 'Active', 'Last Updated', 'Updated By'],
-            field_headings_visible=True
-        ) %}
+  {% call(item, row_number) list_table(
+      email_providers,
+      caption="Email providers",
+      caption_visible=False,
+      empty_message='No email providers',
+      field_headings=['Provider', 'Priority', 'Active', 'Last Updated', 'Updated By'],
+      field_headings_visible=True
+  ) %}
 
-            {{ link_field(item.display_name, url_for('main.view_provider', provider_id=item.id)) }}
+      {{ link_field(item.display_name, url_for('main.view_provider', provider_id=item.id)) }}
 
-            {{ text_field(item.priority) }}
+      {{ text_field(item.priority) }}
 
-            {{ text_field(item.active) }}
+      {{ text_field(item.active) }}
 
-            {% if item.updated_at %}
-                {{ text_field(item.updated_at|format_datetime_short) }}
-            {% else %}
-                {{ text_field('None') }}
-            {% endif %}
+      {% if item.updated_at %}
+          {{ text_field(item.updated_at|format_datetime_short) }}
+      {% else %}
+          {{ text_field('None') }}
+      {% endif %}
 
-            {% if item.created_by %}
-                {{ text_field(item.created_by.name) }}
-            {% else %}
-                {{ text_field('None') }}
-            {% endif %}
+      {% if item.created_by %}
+          {{ text_field(item.created_by.name) }}
+      {% else %}
+          {{ text_field('None') }}
+      {% endif %}
 
-            {{ link_field('change', url_for('main.edit_provider', provider_id=item.id)) }}
+      {{ link_field('change', url_for('main.edit_provider', provider_id=item.id)) }}
 
-        {% endcall %}
+  {% endcall %}
 
-        <h1 class="heading-large">International SMS Providers</h1>
+  <h1 class="heading-large">International SMS Providers</h1>
 
-        {% call(item, row_number) list_table(
-            intl_sms_providers,
-            caption="International SMS providers",
-            caption_visible=False,
-            empty_message='No international sms providers',
-            field_headings=['Provider', 'Priority', 'Active', 'Last Updated', 'Updated By'],
-            field_headings_visible=True
-        ) %}
+  {% call(item, row_number) list_table(
+      intl_sms_providers,
+      caption="International SMS providers",
+      caption_visible=False,
+      empty_message='No international sms providers',
+      field_headings=['Provider', 'Priority', 'Active', 'Last Updated', 'Updated By'],
+      field_headings_visible=True
+  ) %}
 
-            {{ link_field(item.display_name, url_for('main.view_provider', provider_id=item.id)) }}
+      {{ link_field(item.display_name, url_for('main.view_provider', provider_id=item.id)) }}
 
-            {{ text_field(item.priority) }}
+      {{ text_field(item.priority) }}
 
-            {{ text_field(item.active) }}
+      {{ text_field(item.active) }}
 
-            {% if item.updated_at %}
-                {{ text_field(item.updated_at|format_datetime_short) }}
-            {% else %}
-                {{ text_field('None') }}
-            {% endif %}
+      {% if item.updated_at %}
+          {{ text_field(item.updated_at|format_datetime_short) }}
+      {% else %}
+          {{ text_field('None') }}
+      {% endif %}
 
-            {% if item.created_by %}
-                {{ text_field(item.created_by.name) }}
-            {% else %}
-                {{ text_field('None') }}
-            {% endif %}
+      {% if item.created_by %}
+          {{ text_field(item.created_by.name) }}
+      {% else %}
+          {{ text_field('None') }}
+      {% endif %}
 
-            {{ link_field('change', url_for('main.edit_provider', provider_id=item.id)) }}
+      {{ link_field('change', url_for('main.edit_provider', provider_id=item.id)) }}
 
-        {% endcall %}
-
-    </div>
-</div>
+  {% endcall %}
 
 {% endblock %}