diff --git a/app/controllers/services_controller.rb b/app/controllers/services_controller.rb
index af00e9060..0180cfcb4 100644
--- a/app/controllers/services_controller.rb
+++ b/app/controllers/services_controller.rb
@@ -3,10 +3,13 @@ class ServicesController < ApplicationController
   include LinkImporterUtils
 
   before_action :set_service, except: :index
+  before_action :check_permissions, except: :index
+
+  helper_method :org_name_for_current_user
 
   def index
-    @services = Service.enabled.order(broken_link_count: :desc)
-    raise "Missing Data" if @services.empty?
+    @services = services_for_user(current_user).enabled.order(broken_link_count: :desc)
+    # raise "Missing Data" if @services.empty?
 
     @breadcrumbs = index_breadcrumbs
   end
@@ -18,6 +21,22 @@ def show
     @breadcrumbs = service_breadcrumbs(@service)
   end
 
+  def update_owner_form
+    raise GDS::SSO::PermissionDeniedError, "You do not have permission to view this page" unless gds_editor?
+
+    @breadcrumbs = service_breadcrumbs(@service) + [{ title: "Update Owner", url: update_owner_form_service_path(@service) }]
+  end
+
+  def update_owner
+    Rails.logger.info(params)
+
+    raise GDS::SSO::PermissionDeniedError, "You do not have permission to view this page" unless gds_editor?
+
+    @service.update!(organisation_slugs: params["service"]["organisation_slugs"].split(" "))
+
+    redirect_to service_path(@service, filter: "broken_links")
+  end
+
   def download_links_form
     @breadcrumbs = service_breadcrumbs(@service) + [{ title: "Download Links", url: download_links_form_service_path(@service) }]
   end
@@ -40,10 +59,20 @@ def upload_links_csv
 
 private
 
+  def services_for_user(user)
+    return Service.all if gds_editor?
+
+    Service.where(":organisation_slugs = ANY(organisation_slugs)", organisation_slugs: user.organisation_slug)
+  end
+
   def set_service
     @service = Service.find_by!(slug: params[:service_slug])
   end
 
+  def check_permissions
+    raise GDS::SSO::PermissionDeniedError, "You do not have permission to view this page" unless permission_for_service?(@service)
+  end
+
   def links_for_service
     @links_for_service ||= filtered_links(@service.links)
       .includes(%i[interaction local_authority service_interaction])
diff --git a/app/presenters/service_presenter.rb b/app/presenters/service_presenter.rb
index 3f5c9860b..c2bf1b1fa 100644
--- a/app/presenters/service_presenter.rb
+++ b/app/presenters/service_presenter.rb
@@ -6,6 +6,7 @@ def summary_list(view_context)
 
     summary_items = [
       { field: "Local Government Service List (LGSL) Code", value: lgsl_code },
+      { field: "Owning Departments", value: organisation_slugs.join(", ") },
       { field: "Page title(s) on GOV.UK", value: govuk_links.compact.any? ? govuk_links.compact.join("</br>").html_safe : "Not used on GOV.UK" },
     ]
 
diff --git a/app/views/services/index.html.erb b/app/views/services/index.html.erb
index 5fb4181d6..74aca3c8d 100644
--- a/app/views/services/index.html.erb
+++ b/app/views/services/index.html.erb
@@ -1,9 +1,10 @@
-<% content_for :page_title, "Services" %>
+<% title = gds_editor? ? "Services" : "Services for #{org_name_for_current_user}" %>
+<% content_for :page_title, title %>
 
 <% breadcrumb :services %>
 
 <%= render "govuk_publishing_components/components/heading", {
-  text: "Services (#{@services.count})",
+  text: "#{title} (#{@services.count})",
   heading_level: 1,
   font_size: "l",
   margin_bottom: 5,
diff --git a/app/views/services/show.html.erb b/app/views/services/show.html.erb
index 725c9fd52..fcdfc6aa8 100644
--- a/app/views/services/show.html.erb
+++ b/app/views/services/show.html.erb
@@ -15,12 +15,15 @@
     <aside class="app-side__wrapper">
       <div class="app-side">
         <div class="app-side__actions">
+          <%
+            items = []
+            items << link_to("Update Owner", update_owner_form_service_path(@service), class: "govuk-link") if gds_editor?
+            items << link_to("Download Links", download_links_form_service_path(@service), class: "govuk-link")
+            items << link_to("Upload Links", upload_links_form_service_path(@service), class: "govuk-link")
+            items << link_to(@filter_var == "broken_links" ? "Show only broken links" : "Show all links", service_path(@service.slug, filter: @filter_var), class: "govuk-link")
+          %>
           <%= render "govuk_publishing_components/components/list", {
-            items: [
-              link_to("Download Links", download_links_form_service_path(@service), class: "govuk-link"),
-              link_to("Upload Links", upload_links_form_service_path(@service), class: "govuk-link"),
-              link_to(@filter_var == "broken_links" ? "Show only broken links" : "Show all links", service_path(@service.slug, filter: @filter_var), class: "govuk-link"),
-            ],
+            items:,
             margin_bottom: 0,
           } %>
         </div>
diff --git a/app/views/services/update_owner_form.html.erb b/app/views/services/update_owner_form.html.erb
new file mode 100644
index 000000000..68ef8fbed
--- /dev/null
+++ b/app/views/services/update_owner_form.html.erb
@@ -0,0 +1,23 @@
+<% content_for :page_title, "Update Owner" %>
+
+<%= render "govuk_publishing_components/components/heading", {
+  text: "Update Owner",
+  heading_level: 1,
+  font_size: "l",
+  margin_bottom: 5,
+} %>
+
+<%= form_for(@service, url: update_owner_service_path(@service)) do %>
+  <%= render "govuk_publishing_components/components/input", {
+    label: { text: "Organisation Slugs" },
+    hint: "For multiple owning organisations, list slugs separated by spaces",
+    name: "service[organisation_slugs]",
+    value: @service&.organisation_slugs,
+  } %>
+  <%= render "govuk_publishing_components/components/button", { text: "Submit" } %>
+  <%= render "govuk_publishing_components/components/button", {
+    text: "Cancel",
+    secondary_quiet: true,
+    href: service_path(@service, filter: "broken_links"),
+  } %>
+<% end %>
diff --git a/config/routes.rb b/config/routes.rb
index 837972b49..4a9d25efa 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -25,6 +25,8 @@
       post "download_links_csv"
       get "upload_links_form"
       post "upload_links_csv"
+      get "update-owner-form"
+      patch "update-owner"
     end
   end
 
diff --git a/spec/requests/services_page_spec.rb b/spec/requests/services_page_spec.rb
new file mode 100644
index 000000000..aba3e7fb3
--- /dev/null
+++ b/spec/requests/services_page_spec.rb
@@ -0,0 +1,72 @@
+RSpec.describe "Services page" do
+  let(:owning_department) { "department-of-aardvarks" }
+  let!(:service) { create(:service, label: "Aardvark Wardens", organisation_slugs: [owning_department]) }
+
+  describe "GET /services/:service_slug" do
+    it_behaves_like "it is forbidden to non-owners", "/services/aardvark-wardens", "department-of-aardvarks"
+  end
+
+  describe "GET /services/:service_slug/download_links_form" do
+    it_behaves_like "it is forbidden to non-owners", "/services/aardvark-wardens/download_links_form", "department-of-aardvarks"
+  end
+
+  describe "GET /services/:service_slug/upload_links_form" do
+    it_behaves_like "it is forbidden to non-owners", "/services/aardvark-wardens/upload_links_form", "department-of-aardvarks"
+  end
+
+  describe "GET /services/:service_slug/update-owner-form" do
+    context "as a GDS Editor" do
+      before { login_as_gds_editor }
+
+      it "returns 200 OK" do
+        get "/services/aardvark-wardens/update-owner-form"
+
+        expect(response).to have_http_status(:ok)
+      end
+    end
+
+    context "as a department user (even) from the owning department" do
+      before { login_as_department_user(organisation_slug: owning_department) }
+
+      it "returns 403 Forbidden" do
+        get "/services/aardvark-wardens/update-owner-form"
+
+        expect(response).to have_http_status(:forbidden)
+      end
+    end
+  end
+
+  describe "PATCH /services/:service_slug/update-owner" do
+    context "as a GDS Editor" do
+      before { login_as_gds_editor }
+
+      it "returns 200 OK" do
+        patch "/services/aardvark-wardens/update-owner", params: { service: { organisation_slugs: "new-owner" } }
+
+        expect(response).to redirect_to("/services/aardvark-wardens?filter=broken_links")
+      end
+
+      it "updates the organisation slugs" do
+        patch "/services/aardvark-wardens/update-owner", params: { service: { organisation_slugs: "new-owner" } }
+
+        expect(service.reload.organisation_slugs).to eq(%w[new-owner])
+      end
+    end
+
+    context "as a department user (even) from the owning department" do
+      before { login_as_department_user(organisation_slug: owning_department) }
+
+      it "returns 403 Forbidden" do
+        patch "/services/aardvark-wardens/update-owner", params: { service: { organisation_slugs: "new-owner" } }
+
+        expect(response).to have_http_status(:forbidden)
+      end
+
+      it "does not update the organisation slugs" do
+        patch "/services/aardvark-wardens/update-owner", params: { service: { organisation_slugs: "new-owner" } }
+
+        expect(service.reload.organisation_slugs).to eq([owning_department])
+      end
+    end
+  end
+end
diff --git a/spec/system/service_page_spec.rb b/spec/system/service_page_spec.rb
new file mode 100644
index 000000000..6a0fa0cb4
--- /dev/null
+++ b/spec/system/service_page_spec.rb
@@ -0,0 +1,59 @@
+RSpec.describe "Service page" do
+  before do
+    create(:service, label: "Aardvark Wardens", organisation_slugs: %w[department-of-aardvarks])
+  end
+
+  describe "Visiting the page" do
+    context "as an owning department user" do
+      before { login_as_department_user(organisation_slug: "department-of-aardvarks") }
+
+      it "does not show the Update Owner link" do
+        visit "/services/aardvark-wardens"
+
+        expect(page).not_to have_content("Update Owner")
+      end
+    end
+
+    context "as a GDS Editor" do
+      before { login_as_gds_editor }
+
+      it "shows the Update Owner link" do
+        visit "/services/aardvark-wardens"
+
+        expect(page).to have_content("Update Owner")
+      end
+    end
+  end
+
+  describe "Updating the owner" do
+    before { login_as_gds_editor }
+
+    it "allows us to update the owner" do
+      visit "/services/aardvark-wardens"
+
+      expect(page).to have_content("department-of-aardvarks")
+      expect(page).not_to have_content("government-digital-service")
+
+      click_on "Update Owner"
+      fill_in "Organisation Slug", with: "government-digital-service"
+      click_on "Submit"
+
+      expect(page).not_to have_content("department-of-aardvarks")
+      expect(page).to have_content("government-digital-service")
+    end
+
+    it "allows us to cancel updating the owner" do
+      visit "/services/aardvark-wardens"
+
+      expect(page).to have_content("department-of-aardvarks")
+      expect(page).not_to have_content("government-digital-service")
+
+      click_on "Update Owner"
+      fill_in "Organisation Slug", with: "government-digital-service"
+      click_on "Cancel"
+
+      expect(page).to have_content("department-of-aardvarks")
+      expect(page).not_to have_content("government-digital-service")
+    end
+  end
+end
diff --git a/spec/system/services_page_spec.rb b/spec/system/services_page_spec.rb
new file mode 100644
index 000000000..4db6b89a2
--- /dev/null
+++ b/spec/system/services_page_spec.rb
@@ -0,0 +1,77 @@
+require "gds_api/test_helpers/organisations"
+
+RSpec.describe "Services page" do
+  include GdsApi::TestHelpers::Organisations
+
+  before do
+    create(:service, label: "Aardvark Wardens", organisation_slugs: %w[department-of-aardvarks])
+  end
+
+  context "as a gds editor" do
+    before { login_as_gds_editor }
+
+    it "shows all the services" do
+      visit "/services"
+
+      expect(page).to have_content("Aardvark Wardens")
+    end
+
+    it "shows a generic title" do
+      visit "/services"
+
+      expect(page).to have_content("Services (1)")
+    end
+  end
+
+  context "as a department user" do
+    before do
+      stub_organisations_api_has_organisations_with_bodies([{ "title" => "Department of Randomness", "details" => { "slug" => "random-department" } }])
+      login_as_department_user
+    end
+
+    it "does not show Aardvark Wardens service" do
+      visit "/services"
+
+      expect(page).not_to have_content("Aardvark Wardens")
+    end
+
+    it "shows a department title" do
+      visit "/services"
+
+      expect(page).to have_content("Services for Department of Randomness (0)")
+    end
+
+    context "if the Organisations API fails" do
+      before do
+        stub_request(:get, "#{Plek.new.website_root}/api/organisations/random-department").to_raise(GdsApi::HTTPUnavailable)
+      end
+
+      it "shows a generic title" do
+        visit "/services"
+
+        expect(page).to have_content("Services for random-department (0)")
+      end
+    end
+  end
+
+  context "as a user from an owning department" do
+    before do
+      stub_organisations_api_has_organisations_with_bodies([{ "title" => "Department of Aardvarks", "details" => { "slug" => "department-of-aardvarks" } }])
+      login_as_department_user(organisation_slug: "department-of-aardvarks")
+    end
+
+    before { login_as_department_user(organisation_slug: "department-of-aardvarks") }
+
+    it "shows the related services only" do
+      visit "/services"
+
+      expect(page).to have_content("Aardvark Wardens")
+    end
+
+    it "shows a department title" do
+      visit "/services"
+
+      expect(page).to have_content("Services for Department of Aardvarks (1)")
+    end
+  end
+end