diff --git a/app/controllers/collection_resources_controller.rb b/app/controllers/collection_resources_controller.rb
index e8e25487d..ed080c749 100644
--- a/app/controllers/collection_resources_controller.rb
+++ b/app/controllers/collection_resources_controller.rb
@@ -78,6 +78,19 @@ class CollectionResourcesController < ApplicationController
     render "collection_resources/confirm_mandatory_collection_resources_release"
   end
 
+  def release_mandatory_collection_resources
+    return render_not_found unless current_user.support?
+
+    year = params[:year].to_i
+
+    return render_not_found unless editable_collection_resource_years.include?(year)
+
+    MandatoryCollectionResourcesService.release_resources(year)
+
+    flash[:notice] = "The #{text_year_range_format(year)} collection resources are now available to users."
+    redirect_to collection_resources_path
+  end
+
 private
 
   def resource_params
diff --git a/app/services/mandatory_collection_resources_service.rb b/app/services/mandatory_collection_resources_service.rb
index 82a6bd41e..8b34153e9 100644
--- a/app/services/mandatory_collection_resources_service.rb
+++ b/app/services/mandatory_collection_resources_service.rb
@@ -30,6 +30,17 @@ class MandatoryCollectionResourcesService
     )
   end
 
+  def self.release_resources(year)
+    sales_resources = resources_per_year(year, "sales")
+    lettings_resources = resources_per_year(year, "lettings")
+
+    (sales_resources + lettings_resources).each do |resource|
+      resource.released_to_user = true
+      resource.mandatory = true
+      resource.save!
+    end
+  end
+
   def self.display_name(resource, year, log_type)
     year_range = "#{year} to #{year + 1}"
     case resource
diff --git a/spec/requests/collection_resources_controller_spec.rb b/spec/requests/collection_resources_controller_spec.rb
index dbc48d28d..e79867e09 100644
--- a/spec/requests/collection_resources_controller_spec.rb
+++ b/spec/requests/collection_resources_controller_spec.rb
@@ -401,4 +401,72 @@ RSpec.describe CollectionResourcesController, type: :request do
       end
     end
   end
+
+  describe "PATCH #release_mandatory_collection_resources_path" do
+    let(:some_file) { File.open(file_fixture("blank_bulk_upload_sales.csv")) }
+
+    before do
+      allow(UploadCollectionResourcesService).to receive(:upload_collection_resource)
+    end
+
+    context "when user is not signed in" do
+      it "redirects to the sign in page" do
+        patch release_mandatory_collection_resources_path(year: 2024)
+        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
+        patch release_mandatory_collection_resources_path(year: 2024)
+        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
+        patch release_mandatory_collection_resources_path(year: 2024)
+        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
+        # rubocop:disable RSpec/AnyInstance
+        allow_any_instance_of(CollectionResourcesHelper).to receive(:editable_collection_resource_years).and_return([2025])
+        # rubocop:enable RSpec/AnyInstance
+        allow(user).to receive(:need_two_factor_authentication?).and_return(false)
+        sign_in user
+      end
+
+      it "saves resources as released to users" do
+        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true).count).to eq(0)
+
+        patch release_mandatory_collection_resources_path(year: 2025)
+        expect(CollectionResource.all.count).to eq(6)
+        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true, log_type: "sales", resource_type: "paper_form").count).to eq(1)
+        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true, log_type: "sales", resource_type: "bulk_upload_template").count).to eq(1)
+        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true, log_type: "sales", resource_type: "bulk_upload_specification").count).to eq(1)
+        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true, log_type: "lettings", resource_type: "paper_form").count).to eq(1)
+        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true, log_type: "lettings", resource_type: "bulk_upload_template").count).to eq(1)
+        expect(CollectionResource.where(year: 2025, mandatory: true, released_to_user: true, log_type: "lettings", resource_type: "bulk_upload_specification").count).to eq(1)
+        expect(response).to redirect_to(collection_resources_path)
+        expect(flash[:notice]).to eq("The 2025 to 2026 collection resources are now available to users.")
+      end
+    end
+  end
 end