diff --git a/app/controllers/collection_resources_controller.rb b/app/controllers/collection_resources_controller.rb
index f23926f7a..23a1b3c79 100644
--- a/app/controllers/collection_resources_controller.rb
+++ b/app/controllers/collection_resources_controller.rb
@@ -23,8 +23,28 @@ class CollectionResourcesController < ApplicationController
     download_resource(resource.download_filename)
   end
 
+  def update_mandatory_collection_resource
+    return render_not_found unless current_user.support?
+
+    year = params[:year].to_i
+    resource_type = params[:resource_type]
+    log_type = params[:log_type]
+
+    return render_not_found unless resource_for_year_can_be_updated?(year)
+
+    @collection_resource = MandatoryCollectionResourcesService.generate_resource(log_type, year, resource_type)
+
+    return render_not_found unless @collection_resource
+
+    render "collection_resources/edit"
+  end
+
 private
 
+  def resource_params
+    params.require(:collection_resource).permit(:year, :log_type, :resource_type, :file)
+  end
+
   def download_resource(filename)
     url = "https://#{Rails.application.config.collection_resources_s3_bucket_name}.s3.amazonaws.com/#{filename}"
     uri = URI.parse(url)
@@ -46,4 +66,8 @@ private
 
     displayed_collection_resource_years.include?(year)
   end
+
+  def resource_for_year_can_be_updated?(year)
+    editable_collection_resource_years.include?(year)
+  end
 end
diff --git a/app/services/mandatory_collection_resources_service.rb b/app/services/mandatory_collection_resources_service.rb
index 74cb92518..82a6bd41e 100644
--- a/app/services/mandatory_collection_resources_service.rb
+++ b/app/services/mandatory_collection_resources_service.rb
@@ -16,6 +16,8 @@ class MandatoryCollectionResourcesService
   end
 
   def self.generate_resource(log_type, year, resource_type)
+    return unless log_type && year && resource_type
+    return unless %w[lettings sales].include?(log_type)
     return unless MANDATORY_RESOURCES.include?(resource_type)
 
     CollectionResource.new(
diff --git a/app/views/collection_resources/_collection_resource_summary_list.erb b/app/views/collection_resources/_collection_resource_summary_list.erb
index 148c52500..4e3485e76 100644
--- a/app/views/collection_resources/_collection_resource_summary_list.erb
+++ b/app/views/collection_resources/_collection_resource_summary_list.erb
@@ -10,7 +10,7 @@
             <% end %>
             <% row.with_action(
               text: "Change",
-              href: "/",
+              href: update_mandatory_collection_resource_path(year: resource.year, log_type: resource.log_type, resource_type: resource.resource_type),
             ) %>
           <% else %>
             <% row.with_value do %>
diff --git a/app/views/collection_resources/edit.html.erb b/app/views/collection_resources/edit.html.erb
new file mode 100644
index 000000000..00bbf39cb
--- /dev/null
+++ b/app/views/collection_resources/edit.html.erb
@@ -0,0 +1,28 @@
+<% content_for :before_content do %>
+  <%= govuk_back_link href: collection_resources_path %>
+<% end %>
+
+<div class="govuk-grid-row">
+  <div class="govuk-grid-column-two-thirds">
+    <%= form_with model: @collection_resource, scope: :form, url: update_mandatory_collection_resource_path, method: :patch do |f| %>
+      <%= f.hidden_field :year %>
+      <%= f.hidden_field :log_type %>
+      <%= f.hidden_field :resource_type %>
+
+      <%= f.govuk_error_summary %>
+
+      <span class="govuk-caption-l"><%= "#{@collection_resource.log_type.humanize} #{text_year_range_format(@collection_resource.year)}" %></span>
+      <h1 class="govuk-heading-l">Change the <%= @collection_resource.resource_type.humanize.downcase %></h1>
+
+      <p class="govuk-body">
+        This file will be available for all users to download.
+      </p>
+
+      <%= f.govuk_file_field :file,
+        label: { text: "Upload file", size: "m" } %>
+
+      <%= f.govuk_submit "Save changes" %>
+      <%= govuk_button_link_to "Cancel", collection_resources_path, secondary: true %>
+    <% end %>
+  </div>
+</div>
diff --git a/config/routes.rb b/config/routes.rb
index 2d442bc22..1ac459b6b 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -42,6 +42,7 @@ Rails.application.routes.draw do
 
   get "collection-resources", to: "collection_resources#index"
   get "/collection-resources/:log_type/:year/:resource_type/download", to: "collection_resources#download_mandatory_collection_resource", as: :download_mandatory_collection_resource
+  get "/collection-resources/:log_type/:year/:resource_type/edit", to: "collection_resources#update_mandatory_collection_resource", as: :update_mandatory_collection_resource
 
   resources :collection_resources, path: "/collection-resources" do
     get "/download", to: "collection_resources#download_additional_collection_resource" # when we get to adding them
diff --git a/spec/requests/collection_resources_controller_spec.rb b/spec/requests/collection_resources_controller_spec.rb
index 4a066ef13..026b917c9 100644
--- a/spec/requests/collection_resources_controller_spec.rb
+++ b/spec/requests/collection_resources_controller_spec.rb
@@ -86,6 +86,19 @@ RSpec.describe CollectionResourcesController, type: :request do
 
         it "displays change links" do
           expect(page).to have_selector(:link_or_button, "Change", count: 12)
+          expect(page).to have_link("Change", href: update_mandatory_collection_resource_path(year: 2024, log_type: "lettings", resource_type: "paper_form"))
+          expect(page).to have_link("Change", href: update_mandatory_collection_resource_path(year: 2024, log_type: "lettings", resource_type: "bulk_upload_template"))
+          expect(page).to have_link("Change", href: update_mandatory_collection_resource_path(year: 2024, log_type: "lettings", resource_type: "bulk_upload_specification"))
+          expect(page).to have_link("Change", href: update_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "paper_form"))
+          expect(page).to have_link("Change", href: update_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template"))
+          expect(page).to have_link("Change", href: update_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_specification"))
+
+          expect(page).to have_link("Change", href: update_mandatory_collection_resource_path(year: 2025, log_type: "lettings", resource_type: "paper_form"))
+          expect(page).to have_link("Change", href: update_mandatory_collection_resource_path(year: 2025, log_type: "lettings", resource_type: "bulk_upload_template"))
+          expect(page).to have_link("Change", href: update_mandatory_collection_resource_path(year: 2025, log_type: "lettings", resource_type: "bulk_upload_specification"))
+          expect(page).to have_link("Change", href: update_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "paper_form"))
+          expect(page).to have_link("Change", href: update_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "bulk_upload_template"))
+          expect(page).to have_link("Change", href: update_mandatory_collection_resource_path(year: 2025, log_type: "sales", resource_type: "bulk_upload_specification"))
         end
       end
 
@@ -182,4 +195,61 @@ RSpec.describe CollectionResourcesController, type: :request do
       end
     end
   end
+
+  describe "GET #update_mandatory_collection_resource" do
+    context "when user is not signed in" do
+      it "redirects to the sign in page" do
+        get update_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template")
+        expect(response).to redirect_to(new_user_session_path)
+      end
+    end
+
+    context "when user is signed in as a data coordinator" do
+      let(:user) { create(:user, :data_coordinator) }
+
+      before do
+        sign_in user
+      end
+
+      it "returns page not found" do
+        get update_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template")
+        expect(response).to have_http_status(:not_found)
+      end
+    end
+
+    context "when user is signed in as a data provider" do
+      let(:user) { create(:user, :data_provider) }
+
+      before do
+        sign_in user
+      end
+
+      it "returns page not found" do
+        get update_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template")
+        expect(response).to have_http_status(:not_found)
+      end
+    end
+
+    context "when user is signed in as a support user" do
+      let(:user) { create(:user, :support) }
+
+      before do
+        allow(Time.zone).to receive(:today).and_return(Time.zone.local(2025, 1, 8))
+        allow(user).to receive(:need_two_factor_authentication?).and_return(false)
+        sign_in user
+      end
+
+      it "displays update collection resources page content" do
+        get update_mandatory_collection_resource_path(year: 2024, log_type: "sales", resource_type: "bulk_upload_template")
+
+        expect(page).to have_content("Sales 2024 to 2025")
+        expect(page).to have_content("Change the bulk upload template")
+        expect(page).to have_content("This file will be available for all users to download.")
+        expect(page).to have_content("Upload file")
+        expect(page).to have_button("Save changes")
+        expect(page).to have_link("Back", href: collection_resources_path)
+        expect(page).to have_link("Cancel", href: collection_resources_path)
+      end
+    end
+  end
 end