diff --git a/app/main/views/broadcast.py b/app/main/views/broadcast.py
index c9ca2b645..0c30ef0df 100644
--- a/app/main/views/broadcast.py
+++ b/app/main/views/broadcast.py
@@ -1,4 +1,4 @@
-from flask import abort, redirect, render_template, request, url_for
+from flask import abort, jsonify, redirect, render_template, request, url_for
 
 from app import current_service
 from app.main import main
@@ -11,11 +11,32 @@ from app.utils import service_has_permission, user_has_permissions
 @user_has_permissions()
 @service_has_permission('broadcast')
 def broadcast_dashboard(service_id):
-    broadcast_messages = BroadcastMessages(service_id)
     return render_template(
         'views/broadcast/dashboard.html',
-        live_broadcasts=broadcast_messages.with_status('broadcasting'),
-        previous_broadcasts=broadcast_messages.with_status('cancelled', 'completed'),
+        partials=get_broadcast_dashboard_partials(current_service.id)
+    )
+
+
+@main.route('/services/<uuid:service_id>/broadcast-dashboard.json')
+@user_has_permissions()
+@service_has_permission('broadcast')
+def broadcast_dashboard_updates(service_id):
+    return jsonify(get_broadcast_dashboard_partials(current_service.id))
+
+
+def get_broadcast_dashboard_partials(service_id):
+    broadcast_messages = BroadcastMessages(service_id)
+    return dict(
+        live_broadcasts=render_template(
+            'views/broadcast/partials/dashboard-table.html',
+            broadcasts=broadcast_messages.with_status('broadcasting'),
+            empty_message='You do not have any live broadcasts at the moment',
+        ),
+        previous_broadcasts=render_template(
+            'views/broadcast/partials/dashboard-table.html',
+            broadcasts=broadcast_messages.with_status('cancelled', 'completed'),
+            empty_message='You do not have any previous broadcasts',
+        ),
     )
 
 
diff --git a/app/navigation.py b/app/navigation.py
index 2ea2b77c9..4442829f6 100644
--- a/app/navigation.py
+++ b/app/navigation.py
@@ -353,6 +353,7 @@ class HeaderNavigation(Navigation):
         'who_can_use_notify',
         'who_its_for',
         'broadcast_dashboard',
+        'broadcast_dashboard_updates',
         'broadcast',
         'preview_broadcast_areas',
         'choose_broadcast_library',
@@ -373,6 +374,7 @@ class MainNavigation(Navigation):
     mapping = {
         'dashboard': {
             'broadcast_dashboard',
+            'broadcast_dashboard_updates',
             'conversation',
             'inbox',
             'monthly',
@@ -697,6 +699,7 @@ class CaseworkNavigation(Navigation):
     mapping = {
         'dashboard': {
             'broadcast_dashboard',
+            'broadcast_dashboard_updates',
         },
         'send-one-off': {
             'choose_from_contact_list',
@@ -1322,6 +1325,7 @@ class OrgNavigation(Navigation):
         'who_can_use_notify',
         'who_its_for',
         'broadcast_dashboard',
+        'broadcast_dashboard_updates',
         'broadcast',
         'preview_broadcast_areas',
         'choose_broadcast_library',
diff --git a/app/templates/views/broadcast/dashboard.html b/app/templates/views/broadcast/dashboard.html
index a7b31722e..3e35af6ec 100644
--- a/app/templates/views/broadcast/dashboard.html
+++ b/app/templates/views/broadcast/dashboard.html
@@ -1,47 +1,7 @@
-{% from "components/table.html" import list_table, field, right_aligned_field_heading, row_heading %}
+{% from 'components/ajax-block.html' import ajax_block %}
 
 {% extends "withnav_template.html" %}
 
-{% macro broadcast_table(broadcasts, empty_message) %}
-  <div class='dashboard-table ajax-block-container'>
-    {% call(item, row_number) list_table(
-      broadcasts|sort|reverse|list,
-      caption="Live broadcasts",
-      caption_visible=False,
-      empty_message=empty_message,
-      field_headings=[
-        'Template name',
-        'Status'
-      ],
-      field_headings_visible=False
-    ) %}
-      {% call row_heading() %}
-        <div class="file-list">
-          <a class="file-list-filename-large govuk-link govuk-link--no-visited-state" href="{{ url_for('.view_broadcast_message', service_id=current_service.id, broadcast_message_id=item.id) }}">{{ item.template_name }}</a>
-          <span class="file-list-hint-large">
-            To {{ item.initial_area_names|formatted_list(before_each='', after_each='') }}
-          </span>
-        </div>
-      {% endcall %}
-      {% call field(align='right') %}
-        {% if item.status == 'broadcasting' %}
-          <p class="govuk-body govuk-!-margin-top-6 govuk-!-margin-bottom-0">
-            Live until {{ item.finishes_at|format_datetime_relative }}
-          </p>
-        {% elif item.status == 'cancelled' %}
-          <p class="govuk-body govuk-!-margin-top-6 govuk-!-margin-bottom-0 govuk-hint">
-            Stopped {{ item.cancelled_at|format_datetime_relative }}
-          </p>
-        {% else %}
-          <p class="govuk-body govuk-!-margin-top-6 govuk-!-margin-bottom-0 govuk-hint">
-            Finished {{ item.finishes_at|format_datetime_relative }}
-          </p>
-        {% endif %}
-      {% endcall %}
-    {% endcall %}
-  </div>
-{% endmacro %}
-
 {% block service_page_title %}
   Dashboard
 {% endblock %}
@@ -52,10 +12,18 @@
 
   <h2 class="heading-medium govuk-!-margin-bottom-2">Live broadcasts</h2>
 
-  {{ broadcast_table(live_broadcasts, 'You do not have any live broadcasts at the moment') }}
+  {{ ajax_block(
+    partials,
+    url_for('.broadcast_dashboard_updates', service_id=current_service.id),
+    'live_broadcasts'
+  ) }}
 
   <h2 class="heading-medium govuk-!-margin-bottom-2">Previous broadcasts</h2>
 
-  {{ broadcast_table(previous_broadcasts, 'You do not have any previous broadcasts') }}
+  {{ ajax_block(
+    partials,
+    url_for('.broadcast_dashboard_updates', service_id=current_service.id),
+    'previous_broadcasts'
+  ) }}
 
 {% endblock %}
diff --git a/app/templates/views/broadcast/partials/dashboard-table.html b/app/templates/views/broadcast/partials/dashboard-table.html
new file mode 100644
index 000000000..615326b0b
--- /dev/null
+++ b/app/templates/views/broadcast/partials/dashboard-table.html
@@ -0,0 +1,39 @@
+{% from "components/table.html" import list_table, field, right_aligned_field_heading, row_heading %}
+
+<div class='dashboard-table ajax-block-container'>
+  {% call(item, row_number) list_table(
+    broadcasts|sort|reverse|list,
+    caption="Live broadcasts",
+    caption_visible=False,
+    empty_message=empty_message,
+    field_headings=[
+      'Template name',
+      'Status'
+    ],
+    field_headings_visible=False
+  ) %}
+    {% call row_heading() %}
+      <div class="file-list">
+        <a class="file-list-filename-large govuk-link govuk-link--no-visited-state" href="{{ url_for('.view_broadcast_message', service_id=current_service.id, broadcast_message_id=item.id) }}">{{ item.template_name }}</a>
+        <span class="file-list-hint-large">
+          To {{ item.initial_area_names|formatted_list(before_each='', after_each='') }}
+        </span>
+      </div>
+    {% endcall %}
+    {% call field(align='right') %}
+      {% if item.status == 'broadcasting' %}
+        <p class="govuk-body govuk-!-margin-top-6 govuk-!-margin-bottom-0">
+          Live until {{ item.finishes_at|format_datetime_relative }}
+        </p>
+      {% elif item.status == 'cancelled' %}
+        <p class="govuk-body govuk-!-margin-top-6 govuk-!-margin-bottom-0 govuk-hint">
+          Stopped {{ item.cancelled_at|format_datetime_relative }}
+        </p>
+      {% else %}
+        <p class="govuk-body govuk-!-margin-top-6 govuk-!-margin-bottom-0 govuk-hint">
+          Finished {{ item.finishes_at|format_datetime_relative }}
+        </p>
+      {% endif %}
+    {% endcall %}
+  {% endcall %}
+</div>
diff --git a/tests/app/main/views/test_broadcast.py b/tests/app/main/views/test_broadcast.py
index 8d5ca9cf8..f379717cf 100644
--- a/tests/app/main/views/test_broadcast.py
+++ b/tests/app/main/views/test_broadcast.py
@@ -1,3 +1,5 @@
+import json
+
 import pytest
 from flask import url_for
 from freezegun import freeze_time
@@ -10,6 +12,7 @@ sample_uuid = sample_uuid()
 
 @pytest.mark.parametrize('endpoint, extra_args', (
     ('.broadcast_dashboard', {}),
+    ('.broadcast_dashboard_updates', {}),
     ('.broadcast', {'template_id': sample_uuid}),
     ('.preview_broadcast_areas', {'broadcast_message_id': sample_uuid}),
     ('.choose_broadcast_library', {'broadcast_message_id': sample_uuid}),
@@ -88,6 +91,28 @@ def test_broadcast_dashboard(
     ]
 
 
+@freeze_time('2020-02-20 02:20')
+def test_broadcast_dashboard_json(
+    logged_in_client,
+    service_one,
+    mock_get_broadcast_messages,
+):
+    service_one['permissions'] += ['broadcast']
+    response = logged_in_client.get(url_for(
+        '.broadcast_dashboard_updates',
+        service_id=SERVICE_ONE_ID,
+    ))
+
+    assert response.status_code == 200
+
+    json_response = json.loads(response.get_data(as_text=True))
+
+    assert json_response.keys() == {'live_broadcasts', 'previous_broadcasts'}
+
+    assert 'Live until tomorrow at 2:20am' in json_response['live_broadcasts']
+    assert 'Finished yesterday at 8:20pm' in json_response['previous_broadcasts']
+
+
 def test_broadcast_page(
     client_request,
     service_one,