diff --git a/app/__init__.py b/app/__init__.py
index 527495702..43c93f90f 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -345,6 +345,10 @@ def format_delta(date):
     )
 
 
+def format_thousands(number):
+    return "{:,.0f}".format(number)
+
+
 def valid_phone_number(phone_number):
     try:
         validate_phone_number(phone_number)
@@ -688,6 +692,7 @@ def add_template_filters(application):
         formatted_list,
         nl2br,
         format_phone_number_human_readable,
+        format_thousands,
         id_safe,
     ]:
         application.add_template_filter(fn)
diff --git a/app/main/views/choose_account.py b/app/main/views/choose_account.py
index febecaeea..3626a66e6 100644
--- a/app/main/views/choose_account.py
+++ b/app/main/views/choose_account.py
@@ -1,7 +1,9 @@
 from flask import redirect, render_template, session, url_for
 from flask_login import current_user
 
+from app import status_api_client
 from app.main import main
+from app.models.organisation import Organisations
 from app.utils import PermanentRedirect, user_is_logged_in
 
 
@@ -18,9 +20,17 @@ def services_or_dashboard():
 @main.route("/accounts")
 @user_is_logged_in
 def choose_account():
+    org_count, live_service_count = None, None
+    if current_user.platform_admin:
+        org_count, live_service_count = (
+            len(Organisations()),
+            status_api_client.get_count_of_live_services_and_organisations()['services'],
+        )
     return render_template(
         'views/choose-account.html',
         can_add_service=current_user.is_gov_user,
+        org_count=org_count,
+        live_service_count=live_service_count,
     )
 
 
diff --git a/app/templates/views/choose-account.html b/app/templates/views/choose-account.html
index 9457f520e..62924ed19 100644
--- a/app/templates/views/choose-account.html
+++ b/app/templates/views/choose-account.html
@@ -69,6 +69,9 @@
         <ul class="column-three-quarters">
           <li class="browse-list-item">
             <a href="{{ url_for('.organisations') }}" class="browse-list-link">All organisations</a>
+            <p class="browse-list-hint">
+              {{ org_count|format_thousands }} organisations, {{ live_service_count|format_thousands }} live services
+            </p>
           </li>
         </ul>
       </div>
diff --git a/app/templates/views/signedout.html b/app/templates/views/signedout.html
index 14b5d545e..a3de3624d 100644
--- a/app/templates/views/signedout.html
+++ b/app/templates/views/signedout.html
@@ -120,12 +120,12 @@
       <div class="grid-row bottom-gutter">
         <div class="column-half">
           <h3 class="visually-hidden">Services</h3>
-          <div class="product-page-big-number">{{ counts.services }}</div>
+          <div class="product-page-big-number">{{ counts.services|format_thousands }}</div>
           services
         </div>
         <div class="column-half">
           <h3 class="visually-hidden">Organisations</h3>
-          <div class="product-page-big-number">{{ counts.organisations }}</div>
+          <div class="product-page-big-number">{{ counts.organisations|format_thousands }}</div>
           organisations
         </div>
       </div>
diff --git a/tests/app/main/views/accounts/test_choose_accounts.py b/tests/app/main/views/accounts/test_choose_accounts.py
index 4ecd2d559..bc3c3b69b 100644
--- a/tests/app/main/views/accounts/test_choose_accounts.py
+++ b/tests/app/main/views/accounts/test_choose_accounts.py
@@ -157,16 +157,21 @@ def test_choose_account_should_show_choose_accounts_page_if_no_services(
 def test_choose_account_should_should_organisations_link_for_platform_admin(
     client_request,
     platform_admin_user,
+    mock_get_organisations,
     mock_get_orgs_and_services,
     mock_get_organisation_services,
+    mock_get_service_and_organisation_counts,
 ):
     client_request.login(platform_admin_user)
 
     page = client_request.get('main.choose_account')
 
-    first_link = page.select_one('.browse-list-item a')
+    first_item = page.select_one('.browse-list-item')
+    first_link = first_item.select_one('a')
+    first_hint = first_item.select_one('.browse-list-hint')
     assert first_link.text == 'All organisations'
     assert first_link['href'] == url_for('main.organisations')
+    assert normalize_spaces(first_hint.text) == '3 organisations, 9,999 live services'
 
 
 def test_choose_account_should_show_back_to_service_link(
diff --git a/tests/app/main/views/test_index.py b/tests/app/main/views/test_index.py
index e668f7068..b49204057 100644
--- a/tests/app/main/views/test_index.py
+++ b/tests/app/main/views/test_index.py
@@ -34,7 +34,7 @@ def test_non_logged_in_user_can_see_homepage(
     assert normalize_spaces(page.select_one('#whos-using-notify').text) == (
         'Who’s using GOV.UK Notify '
         'Services '
-        '9999 services '
+        '9,999 services '
         'Organisations '
         '111 organisations '
         'See the list of services and organisations.'
diff --git a/tests/app/main/views/test_service_settings.py b/tests/app/main/views/test_service_settings.py
index 917e4d447..87d56542a 100644
--- a/tests/app/main/views/test_service_settings.py
+++ b/tests/app/main/views/test_service_settings.py
@@ -3647,6 +3647,8 @@ def test_service_switch_can_upload_document_lets_contact_details_be_added_and_sh
 def test_archive_service_after_confirm(
     client_request,
     mocker,
+    mock_get_organisations,
+    mock_get_service_and_organisation_counts,
     mock_get_organisations_and_services_for_user,
     user,
     fake_uuid,
diff --git a/tests/conftest.py b/tests/conftest.py
index 39d56b010..15a92a572 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -3121,7 +3121,15 @@ def mock_get_organisations(mocker):
             organisation_json('7aa5d4e9-4385-4488-a489-07812ba13385', 'Org 3'),
         ]
 
-    return mocker.patch('app.organisations_client.get_organisations', side_effect=_get_organisations)
+    mocker.patch(
+        'app.models.organisation.Organisations.client',
+        side_effect=_get_organisations,
+    )
+
+    return mocker.patch(
+        'app.notify_client.organisations_api_client.organisations_client.get_organisations',
+        side_effect=_get_organisations,
+    )
 
 
 @pytest.fixture(scope='function')