diff --git a/app/controllers/organisations_controller.rb b/app/controllers/organisations_controller.rb
index 044bab74d..c6bc5888e 100644
--- a/app/controllers/organisations_controller.rb
+++ b/app/controllers/organisations_controller.rb
@@ -44,6 +44,22 @@ class OrganisationsController < ApplicationController
     redirect_to schemes_csv_confirmation_organisation_path
   end
 
+  def duplicate_schemes
+    authorize @organisation
+
+    duplicate_scheme_sets = @organisation.owned_schemes.duplicate_sets
+    @duplicate_schemes = duplicate_scheme_sets.map { |set| set.map { |id| @organisation.owned_schemes.find(id) } }
+    @duplicate_locations = []
+    @organisation.owned_schemes.each do |scheme|
+      duplicate_location_sets = scheme.locations.duplicate_sets
+      next unless duplicate_location_sets.any?
+
+      duplicate_location_sets.each do |duplicate_set|
+        @duplicate_locations << { scheme: scheme, locations: duplicate_set.map { |id| scheme.locations.find(id) } }
+      end
+    end
+  end
+
   def show
     redirect_to details_organisation_path(@organisation)
   end
diff --git a/app/policies/organisation_policy.rb b/app/policies/organisation_policy.rb
index 9c27d6e91..97fd4582e 100644
--- a/app/policies/organisation_policy.rb
+++ b/app/policies/organisation_policy.rb
@@ -34,4 +34,8 @@ class OrganisationPolicy
     editable_sales_logs = organisation.sales_logs.visible.after_date(editable_from_date)
     organisation.sales_logs.visible.where(saledate: nil).any? || editable_sales_logs.any?
   end
+
+  def duplicate_schemes?
+    user.support? || (user.data_coordinator? && user.organisation == organisation)
+  end
 end
diff --git a/app/views/organisations/duplicate_schemes.html.erb b/app/views/organisations/duplicate_schemes.html.erb
index e69de29bb..d002f2989 100644
--- a/app/views/organisations/duplicate_schemes.html.erb
+++ b/app/views/organisations/duplicate_schemes.html.erb
@@ -0,0 +1,114 @@
+<% content_for :before_content do %>
+  <%= govuk_back_link href: schemes_organisation_path(@organisation) %>
+<% end %>
+
+<% title = "Review these sets of schemes and locations" %>
+<% content_for :title, title %>
+
+<% if current_user.support? %>
+  <%= render SubNavigationComponent.new(
+    items: secondary_items(request.path, @organisation.id),
+  ) %>
+<% end %>
+
+<div class="govuk-grid-row">
+  <div class="govuk-grid-column-two-thirds-from-desktop">
+    <h1 class="govuk-heading-xl"><%= title %></h1>
+
+    <p class="govuk-body">Since your organisation recently merged, we’ve reviewed your schemes for possible duplicates.</p>
+    <p class="govuk-body">These sets of schemes and locations might be duplicates because they have the same answers for certain fields.</p>
+    <h2 class="govuk-heading-m">What you need to do</h2>
+    <ul class="govuk-list govuk-list--bullet">
+      <li>Review each set of schemes or locations and decide if they are duplicates.</li>
+      <li>If they are, choose one to keep and deactivate the others on the date your organisation merged.</li>
+      <li>When you have resolved all duplicates, confirm below.</li>
+    </ul>
+    <p class="govuk-body">If you need help with this, <%= govuk_link_to "contact the helpdesk (opens in a new tab)", GlobalConstants::HELPDESK_URL, target: "#" %>.</p>
+
+    <% if @duplicate_schemes.any? %>
+      <h2 class="govuk-heading-m"><%= @duplicate_schemes.count == 1 ? "This set" : "These #{@duplicate_schemes.count} sets" %> of schemes might have duplicates</h2>
+
+      <%= govuk_details(summary_text: "Why are these schemes identified as duplicates?") do %>
+        <p class="govuk-body">
+          These schemes have the same answers for the following fields:
+        </p>
+        <ul class="govuk-list govuk-list--bullet">
+          <li>Type of scheme</li>
+          <li>Registered under Care Standards Act 2000</li>
+          <li>Housing stock owned by</li>
+          <li>Support services provided by</li>
+          <li>Primary client group</li>
+          <li>Has another client group</li>
+          <li>Secondary client group</li>
+          <li>Level of support given</li>
+          <li>Intended length of stay</li>
+        </ul>
+      <% end %>
+
+      <%= govuk_table do |table| %>
+        <%= table.with_head do |head| %>
+          <% head.with_row do |row| %>
+            <% row.with_cell(header: true, text: "Schemes") %>
+          <% end %>
+
+          <%= table.with_body do |body| %>
+            <% @duplicate_schemes.each do |duplicate_set| %>
+              <% body.with_row do |row| %>
+              <% row.with_cell do %>
+                  <ol class="govuk-list govuk-list--number">
+                    <% duplicate_set.each do |scheme| %>
+                      <li>
+                        <%= govuk_link_to scheme.service_name, scheme %>
+                      </li>
+                    <% end %>
+                  </ol>
+                <% end %>
+              <% end %>
+            <% end %>
+          <% end %>
+        <% end %>
+      <% end %>
+    <% end %>
+
+    <% if @duplicate_locations.any? %>
+      <h2 class="govuk-heading-m"><%= @duplicate_locations.count == 1 ? "This set" : "These #{@duplicate_locations.count} sets" %> of locations might have duplicates</h2>
+      <%= govuk_details(summary_text: "Why are these locations identified as duplicates?") do %>
+        <p class="govuk-body">
+          These locations belong to the same scheme and have the same answers for the following fields:
+        </p>
+        <ul class="govuk-list govuk-list--bullet">
+          <li>Postcode</li>
+          <li>Mobility standards</li>
+        </ul>
+      <% end %>
+
+      <%= govuk_table do |table| %>
+        <%= table.with_head do |head| %>
+          <% head.with_row do |row| %>
+            <% row.with_cell(header: true, text: "Locations") %>
+            <% row.with_cell(header: true, text: "Scheme") %>
+          <% end %>
+
+          <%= table.with_body do |body| %>
+            <% @duplicate_locations.each do |duplicate_set| %>
+              <% body.with_row do |row| %>
+                <% row.with_cell do %>
+                    <ol class="govuk-list govuk-list--number">
+                      <% duplicate_set[:locations].each do |location| %>
+                        <li>
+                          <%= govuk_link_to location.name, scheme_location_path(location) %>
+                        </li>
+                      <% end %>
+                    </ol>
+                <% end %>
+                <% row.with_cell do %>
+                  <%= govuk_link_to duplicate_set[:scheme].service_name, duplicate_set[:scheme] %>
+                <% end %>
+              <% end %>
+            <% end %>
+          <% end %>
+        <% end %>
+      <% end %>
+    <% end %>
+  </div>
+</div>
diff --git a/spec/requests/organisations_controller_spec.rb b/spec/requests/organisations_controller_spec.rb
index 50ec7fab5..8f62e72a8 100644
--- a/spec/requests/organisations_controller_spec.rb
+++ b/spec/requests/organisations_controller_spec.rb
@@ -366,6 +366,77 @@ RSpec.describe OrganisationsController, type: :request do
       end
     end
 
+    describe "#duplicate_schemes" do
+      context "with support user" do
+        let(:user) { create(:user, :support) }
+
+        before do
+          allow(user).to receive(:need_two_factor_authentication?).and_return(false)
+          sign_in user
+          get "/organisations/#{organisation.id}/schemes/duplicates", headers:
+        end
+
+        it "has page heading" do
+          expect(page).to have_content("Review these sets of schemes and locations")
+        end
+
+        context "with duplicate schemes and locations" do
+          let(:schemes) { create_list(:scheme, 5, :duplicate, owning_organisation: organisation) }
+
+          before do
+            create_list(:location, 2, scheme: schemes.first, postcode: "M1 1AA", mobility_type: "M")
+            create_list(:location, 2, scheme: schemes.first, postcode: "M1 1AA", mobility_type: "A")
+            get "/organisations/#{organisation.id}/schemes/duplicates", headers:
+          end
+
+          it "displays the duplicate schemes" do
+            expect(page).to have_content("This set of schemes might have duplicates")
+          end
+
+          it "displays the duplicate locations" do
+            expect(page).to have_content("These 2 sets of locations might have duplicates")
+          end
+        end
+
+        context "without duplicate schemes and locations" do
+          it "does not display the schemes" do
+            expect(page).not_to have_content("schemes might have duplicates")
+          end
+
+          it "does not display the locations" do
+            expect(page).not_to have_content("locations might have duplicates")
+          end
+        end
+      end
+
+      context "with data coordinator user" do
+        let(:user) { create(:user, :data_coordinator) }
+        let!(:schemes) { create_list(:scheme, 5, :duplicate) }
+
+        before do
+          sign_in user
+          get "/organisations/#{organisation.id}/schemes/duplicates", headers:
+        end
+
+        it "has page heading" do
+          expect(page).to have_content("Review these sets of schemes and locations")
+        end
+      end
+
+      context "with data coordinator user" do
+        let(:user) { create(:user, :data_provider) }
+
+        before do
+          sign_in user
+          get "/organisations/#{organisation.id}/schemes/duplicates", headers:
+        end
+
+        it "be unauthorised" do
+          expect(response).to have_http_status(:unauthorized)
+        end
+      end
+    end
+
     describe "#show" do
       context "with an organisation that the user belongs to" do
         let(:set_time) {}