diff --git a/.gitignore b/.gitignore
index 938fe508..6481b5e8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,4 +15,4 @@ yarn-error.log
 /test-results/
 /playwright-report/
 /blob-report/
-/playwright/.cache/
+/playwright/.cache/
\ No newline at end of file
diff --git a/WIDGET_TEST.md b/WIDGET_TEST.md
new file mode 100644
index 00000000..53e26a29
--- /dev/null
+++ b/WIDGET_TEST.md
@@ -0,0 +1,28 @@
+# Testing Element-Call in widget mode
+
+When running `yarn backend` the latest element-web develop will be deployed and served on `http://localhost:8081`.
+In a development environment, you might prefer to just use the `element-web` repo directly, but this setup is useful for CI/CD testing.
+
+## Setup
+
+The element-web configuration is modified to:
+
+- Enable to use the local widget instance (`element_call.url` https://localhost:3000).
+- Enable the labs features (`feature_group_calls`, `feature_element_call_video_rooms`).
+
+The default configuration used by docker-compose is in `test-container/config.json`. There is a fixture for playwright
+that uses
+
+## Running the element-web instance
+
+It is part of the existing backend setup. To start the backend, run:
+
+```sh
+yarn backend
+```
+
+Then open `http://localhost:8081` in your browser.
+
+## Basic fixture
+
+A base fixture is provided in `/playwright/fixtures/widget-user.ts` that will register two users that shares a room.
diff --git a/backend/ew.test.config.json b/backend/ew.test.config.json
new file mode 100644
index 00000000..7fe0c63f
--- /dev/null
+++ b/backend/ew.test.config.json
@@ -0,0 +1,54 @@
+{
+  "default_server_config": {
+    "m.homeserver": {
+      "base_url": "http://synapse.localhost:8008",
+      "server_name": "synapse.localhost"
+    }
+  },
+  "disable_custom_urls": false,
+  "disable_guests": false,
+  "disable_login_language_selector": false,
+  "disable_3pid_login": false,
+  "force_verification": false,
+  "brand": "Element",
+  "integrations_ui_url": "https://scalar.vector.im/",
+  "integrations_rest_url": "https://scalar.vector.im/api",
+  "integrations_widgets_urls": [
+    "https://scalar.vector.im/_matrix/integrations/v1",
+    "https://scalar.vector.im/api",
+    "https://scalar-staging.vector.im/_matrix/integrations/v1",
+    "https://scalar-staging.vector.im/api",
+    "https://scalar-staging.riot.im/scalar/api"
+  ],
+  "default_widget_container_height": 280,
+  "default_country_code": "GB",
+  "show_labs_settings": false,
+  "features": {
+    "feature_element_call_video_rooms": true,
+    "feature_video_rooms": true,
+    "feature_group_calls": true,
+    "feature_release_announcement": false
+  },
+  "default_federate": true,
+  "default_theme": "light",
+  "room_directory": {
+    "servers": ["matrix.org"]
+  },
+  "enable_presence_by_hs_url": {
+    "https://matrix.org": false,
+    "https://matrix-client.matrix.org": false
+  },
+  "setting_defaults": {
+    "breadcrumbs": true,
+    "feature_group_calls": true
+  },
+  "jitsi": {
+    "preferred_domain": "meet.element.io"
+  },
+  "element_call": {
+    "url": "https://localhost:3000",
+    "participant_limit": 8,
+    "brand": "Element Call"
+  },
+  "map_style_url": "https://api.maptiler.com/maps/streets/style.json?key=fU3vlMsMn4Jb6dnEIFsx"
+}
diff --git a/dev-backend-docker-compose.yml b/dev-backend-docker-compose.yml
index dcfb8d66..fa07afde 100644
--- a/dev-backend-docker-compose.yml
+++ b/dev-backend-docker-compose.yml
@@ -68,6 +68,17 @@ services:
     networks:
       - ecbackend
 
+  element-web:
+    image: ghcr.io/element-hq/element-web:develop
+    volumes:
+      - ./backend/ew.test.config.json:/app/config.json
+    environment:
+      ELEMENT_WEB_PORT: 81
+    ports:
+      - "8081:81"
+    networks:
+      - ecbackend
+
   nginx:
     #  openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -keyout tls_localhost_key.pem -out tls_localhost_cert.pem -subj "/C=GB/ST=London/L=London/O=Alros/OU=IT Department/CN=localhost"
     hostname: synapse.localhost
diff --git a/playwright-backend-docker-compose.yml b/playwright-backend-docker-compose.yml
index fed10fe8..e5cf12b5 100644
--- a/playwright-backend-docker-compose.yml
+++ b/playwright-backend-docker-compose.yml
@@ -51,6 +51,17 @@ services:
     networks:
       - ecbackend
 
+  element-web:
+    image: ghcr.io/element-hq/element-web:develop
+    volumes:
+      - ./backend/ew.test.config.json:/app/config.json
+    environment:
+      ELEMENT_WEB_PORT: 81
+    ports:
+      - "8081:81"
+    networks:
+      - ecbackend
+
   synapse:
     hostname: homeserver
     image: docker.io/matrixdotorg/synapse:latest
diff --git a/playwright/fixtures/widget-user.ts b/playwright/fixtures/widget-user.ts
new file mode 100644
index 00000000..391a2dd6
--- /dev/null
+++ b/playwright/fixtures/widget-user.ts
@@ -0,0 +1,169 @@
+/*
+Copyright 2025 New Vector Ltd.
+
+SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE in the repository root for full details.
+*/
+
+import { type Page, test, expect, type JSHandle } from "@playwright/test";
+
+import type { MatrixClient } from "matrix-js-sdk/src";
+
+export type UserBaseFixture = {
+  mxId: string;
+  page: Page;
+  clientHandle: JSHandle<MatrixClient>;
+};
+
+export type BaseWidgetSetup = {
+  brooks: UserBaseFixture;
+  whistler: UserBaseFixture;
+};
+
+export interface MyFixtures {
+  asWidget: BaseWidgetSetup;
+}
+
+const PASSWORD = "foobarbaz1!";
+
+// Minimal config.json for the local element-web instance
+const CONFIG_JSON = {
+  default_server_config: {
+    "m.homeserver": {
+      base_url: "http://synapse.localhost:8008",
+      server_name: "synapse.localhost",
+    },
+  },
+
+  element_call: {
+    url: "https://localhost:3000",
+    participant_limit: 8,
+    brand: "Element Call",
+  },
+
+  // The default language is set here for test consistency
+  setting_defaults: {
+    language: "en-GB",
+    feature_group_calls: true,
+  },
+
+  // the location tests want a map style url.
+  map_style_url:
+    "https://api.maptiler.com/maps/streets/style.json?key=fU3vlMsMn4Jb6dnEIFsx",
+
+  features: {
+    // We don't want to go through the feature announcement during the e2e test
+    feature_release_announcement: false,
+    feature_element_call_video_rooms: true,
+    feature_video_rooms: true,
+    feature_group_calls: true,
+  },
+};
+
+export const widgetTest = test.extend<MyFixtures>({
+  asWidget: async ({ browser, context }, pUse) => {
+    await context.route(`http://localhost:8081/config.json*`, async (route) => {
+      await route.fulfill({ json: CONFIG_JSON });
+    });
+
+    const userA = `brooks_${Date.now()}`;
+    const userB = `whistler_${Date.now()}`;
+
+    const user1Context = await browser.newContext({
+      reducedMotion: "reduce",
+    });
+    const ewPage1 = await user1Context.newPage();
+    // Register the first user
+    await ewPage1.goto("http://localhost:8081/#/welcome");
+    await ewPage1.getByRole("link", { name: "Create Account" }).click();
+    await ewPage1.getByRole("textbox", { name: "Username" }).fill(userA);
+    await ewPage1
+      .getByRole("textbox", { name: "Password", exact: true })
+      .fill(PASSWORD);
+    await ewPage1.getByRole("textbox", { name: "Confirm password" }).click();
+    await ewPage1
+      .getByRole("textbox", { name: "Confirm password" })
+      .fill(PASSWORD);
+    await ewPage1.getByRole("button", { name: "Register" }).click();
+    await expect(
+      ewPage1.getByRole("heading", { name: `Welcome ${userA}` }),
+    ).toBeVisible();
+
+    const brooksClientHandle = await ewPage1.evaluateHandle(() =>
+      window.mxMatrixClientPeg.get(),
+    );
+    const brooksMxId = (await brooksClientHandle.evaluate((cli) => {
+      return cli.getUserId();
+    }, brooksClientHandle))!;
+
+    const user2Context = await browser.newContext({
+      reducedMotion: "reduce",
+    });
+    const ewPage2 = await user2Context.newPage();
+    // Register the second user
+    await ewPage2.goto("http://localhost:8081/#/welcome");
+    await ewPage2.getByRole("link", { name: "Create Account" }).click();
+    await ewPage2.getByRole("textbox", { name: "Username" }).fill(userB);
+    await ewPage2
+      .getByRole("textbox", { name: "Password", exact: true })
+      .fill(PASSWORD);
+    await ewPage2.getByRole("textbox", { name: "Confirm password" }).click();
+    await ewPage2
+      .getByRole("textbox", { name: "Confirm password" })
+      .fill(PASSWORD);
+    await ewPage2.getByRole("button", { name: "Register" }).click();
+    await expect(
+      ewPage2.getByRole("heading", { name: `Welcome ${userB}` }),
+    ).toBeVisible();
+
+    const whistlerClientHandle = await ewPage2.evaluateHandle(() =>
+      window.mxMatrixClientPeg.get(),
+    );
+    const whistlerMxId = (await whistlerClientHandle.evaluate((cli) => {
+      return cli.getUserId();
+    }, whistlerClientHandle))!;
+
+    // Invite the second user
+    await ewPage1.getByRole("button", { name: "Add room" }).click();
+    await ewPage1.getByText("New room").click();
+    await ewPage1.getByRole("textbox", { name: "Name" }).fill("Welcome Room");
+    await ewPage1.getByRole("button", { name: "Create room" }).click();
+    await expect(ewPage1.getByText("You created this room.")).toBeVisible();
+    await expect(ewPage1.getByText("Encryption enabled")).toBeVisible();
+
+    await ewPage1
+      .getByRole("button", { name: "Invite to this room", exact: true })
+      .click();
+    await expect(
+      ewPage1.getByRole("heading", { name: "Invite to Welcome Room" }),
+    ).toBeVisible();
+
+    await ewPage1.getByRole("textbox").fill(whistlerMxId);
+    await ewPage1.getByRole("textbox").click();
+    await ewPage1.getByRole("button", { name: "Invite" }).click();
+
+    // Accept the invite
+    await expect(
+      ewPage2.getByRole("treeitem", { name: "Welcome Room" }),
+    ).toBeVisible();
+    await ewPage2.getByRole("treeitem", { name: "Welcome Room" }).click();
+    await ewPage2.getByRole("button", { name: "Accept" }).click();
+    await expect(
+      ewPage2.getByRole("main").getByRole("heading", { name: "Welcome Room" }),
+    ).toBeVisible();
+
+    // Renamed use to pUse, as a workaround for eslint error that was thinking this use was a react use.
+    await pUse({
+      brooks: {
+        mxId: brooksMxId,
+        page: ewPage1,
+        clientHandle: brooksClientHandle,
+      },
+      whistler: {
+        mxId: whistlerMxId,
+        page: ewPage2,
+        clientHandle: whistlerClientHandle,
+      },
+    });
+  },
+});
diff --git a/playwright/global.d.ts b/playwright/global.d.ts
new file mode 100644
index 00000000..2108240e
--- /dev/null
+++ b/playwright/global.d.ts
@@ -0,0 +1,16 @@
+/*
+Copyright 2025 New Vector Ltd.
+
+SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE in the repository root for full details.
+*/
+
+import type * as Matrix from "matrix-js-sdk/src";
+
+declare global {
+  interface Window {
+    mxMatrixClientPeg: {
+      get(): Matrix.MatrixClient;
+    };
+  }
+}
diff --git a/playwright/widget/simple-create.spec.ts b/playwright/widget/simple-create.spec.ts
new file mode 100644
index 00000000..3712f5c4
--- /dev/null
+++ b/playwright/widget/simple-create.spec.ts
@@ -0,0 +1,97 @@
+/*
+Copyright 2025 New Vector Ltd.
+
+SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE in the repository root for full details.
+*/
+
+import { expect, test } from "@playwright/test";
+
+import { widgetTest } from "../fixtures/widget-user.ts";
+
+widgetTest("Start a new call as widget", async ({ asWidget, browserName }) => {
+  test.skip(
+    browserName === "firefox",
+    "This test is not working on firefox, after hangup brooks is locked in a strange state with a blank widget",
+  );
+
+  const { brooks, whistler } = asWidget;
+
+  await expect(
+    brooks.page.getByRole("button", { name: "Video call" }),
+  ).toBeVisible();
+  await brooks.page.getByRole("button", { name: "Video call" }).click();
+
+  await expect(
+    brooks.page.getByRole("menuitem", { name: "Legacy Call" }),
+  ).toBeVisible();
+  await expect(
+    brooks.page.getByRole("menuitem", { name: "Element Call" }),
+  ).toBeVisible();
+
+  await brooks.page.getByRole("menuitem", { name: "Element Call" }).click();
+
+  await expect(
+    brooks.page
+      .locator('iframe[title="Element Call"]')
+      .contentFrame()
+      .getByTestId("lobby_joinCall"),
+  ).toBeVisible();
+
+  await brooks.page
+    .locator('iframe[title="Element Call"]')
+    .contentFrame()
+    .getByTestId("lobby_joinCall")
+    .click();
+
+  // Check the join indicator on the room list
+  await expect(
+    brooks.page.locator("div").filter({ hasText: /^Joined • 1$/ }),
+  ).toBeVisible();
+
+  // Join from the other side
+  await expect(whistler.page.getByText("Video call started")).toBeVisible();
+  await expect(
+    whistler.page.getByRole("button", { name: "Join" }),
+  ).toBeVisible();
+  await whistler.page.getByRole("button", { name: "Join" }).click();
+
+  await expect(
+    whistler.page
+      .locator('iframe[title="Element Call"]')
+      .contentFrame()
+      .getByTestId("lobby_joinCall"),
+  ).toBeVisible();
+
+  await whistler.page
+    .locator('iframe[title="Element Call"]')
+    .contentFrame()
+    .getByTestId("lobby_joinCall")
+    .click();
+
+  await expect(
+    whistler.page.locator("div").filter({ hasText: /^Joined • 2$/ }),
+  ).toBeVisible();
+
+  await expect(
+    brooks.page.locator("div").filter({ hasText: /^Joined • 2$/ }),
+  ).toBeVisible();
+
+  // Whistler leaves
+  await whistler.page.waitForTimeout(1000);
+  await whistler.page
+    .locator('iframe[title="Element Call"]')
+    .contentFrame()
+    .getByTestId("incall_leave")
+    .click();
+
+  // Brooks leaves
+  await brooks.page
+    .locator('iframe[title="Element Call"]')
+    .contentFrame()
+    .getByTestId("incall_leave")
+    .click();
+
+  await expect(whistler.page.locator(".mx_BasicMessageComposer")).toBeVisible();
+  await expect(brooks.page.locator(".mx_BasicMessageComposer")).toBeVisible();
+});