diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 00000000..13566b81
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/components/timeout-modal/.gitignore b/components/timeout-modal/.gitignore
new file mode 100644
index 00000000..aa49ac15
--- /dev/null
+++ b/components/timeout-modal/.gitignore
@@ -0,0 +1,5 @@
+dist/
+node_modules/
+package-lock.json
+pnpm-lock.yaml
+tsconfig.tsbuildinfo
diff --git a/components/timeout-modal/README.md b/components/timeout-modal/README.md
new file mode 100644
index 00000000..913e98e5
--- /dev/null
+++ b/components/timeout-modal/README.md
@@ -0,0 +1,67 @@
+Hods - Timeout-Modal
+====================
+
+HODS timeout modal
+
+
+Using this package
+------------------
+
+First install the package into your project:
+
+```shell
+npm install -S @hods/timeout-modal
+```
+
+Then use it in your code as follows:
+
+```js
+import React, { createElement as h } from 'react';
+import TimeoutModal from '@hods/timeout-modal';
+
+export const MyComponent = props => (
+  <TimeoutModal
+    // WRITEME
+  />
+);
+
+export default MyComponent;
+```
+
+
+Working on this package
+-----------------------
+
+Before working on this package you must install its dependencies using
+the following command:
+
+```shell
+pnpm install
+```
+
+
+### Testing
+
+Run the unit tests.
+
+```shell
+npm test
+```
+
+
+### Building
+
+Build the package by compiling the TypeScript source code.
+
+```shell
+npm run build
+```
+
+
+### Clean-up
+
+Remove any previously built files.
+
+```shell
+npm run clean
+```
diff --git a/components/timeout-modal/assets/TimeoutModal.scss b/components/timeout-modal/assets/TimeoutModal.scss
new file mode 100644
index 00000000..820b0179
--- /dev/null
+++ b/components/timeout-modal/assets/TimeoutModal.scss
@@ -0,0 +1,58 @@
+@import "@hods/sass-base";
+@import "govuk-frontend/govuk/objects/_button-group";
+@import "govuk-frontend/govuk/components/button/_button";
+@import "govuk-frontend/govuk/core/_typography";
+@import "govuk-frontend/govuk/core/_links";
+
+.hods-timeout-modal {
+  &__overlay {
+    width: 100%;
+    height: 100%;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    background-color: rgba(0,0,0,0.8);
+    z-index: 666;
+  }
+  &__content {
+    min-width: 200px;
+    max-width: 340px;
+    @include govuk-responsive-padding(6);
+    background-color: #fff;
+    border: 3px solid #000000;
+
+    h1 {
+      @extend .govuk-heading-l;
+    }
+
+    p {
+      @extend .govuk-body;
+    }
+  }
+  &__buttons {
+    @extend .govuk-button-group;
+    @include govuk-responsive-margin(0, 'bottom');
+
+    button {
+      @extend .govuk-button;
+
+      @include govuk-media-query($from: tablet) {
+        @include govuk-responsive-margin(0, 'bottom');
+      }
+    }
+
+    a {
+      @extend .govuk-link;
+      @include govuk-responsive-margin(0);
+
+      @include govuk-media-query($from: tablet) {
+        @include govuk-responsive-margin(3, 'left');
+      }
+    }
+  }
+  &__timer {
+    font-weight: $govuk-font-weight-bold;
+    white-space: nowrap;
+  }
+
+}
diff --git a/components/timeout-modal/jest.config.js b/components/timeout-modal/jest.config.js
new file mode 100644
index 00000000..116a1cfb
--- /dev/null
+++ b/components/timeout-modal/jest.config.js
@@ -0,0 +1,15 @@
+'use strict';
+
+const baseConfig = require('../../jest.config.base');
+
+const config = {
+  ...baseConfig,
+  collectCoverageFrom: [
+    '<rootDir>/src/**.{ts,tsx}',
+  ],
+  testMatch: [
+    '<rootDir>/spec/**.{ts,tsx}'
+  ]
+};
+
+module.exports = config;
diff --git a/components/timeout-modal/package.json b/components/timeout-modal/package.json
new file mode 100644
index 00000000..a108497a
--- /dev/null
+++ b/components/timeout-modal/package.json
@@ -0,0 +1,53 @@
+{
+  "name": "@hods/timeout-modal",
+  "version": "0.4.0",
+  "description": "HODS timeout modal",
+  "main": "src/TimeoutModal.tsx",
+  "sass": "assets/TimeoutModal.scss",
+  "publishConfig": {
+    "main": "dist/TimeoutModal.js",
+    "typings": "dist/TimeoutModal.d.ts"
+  },
+  "files": [
+    "/assets",
+    "/dist"
+  ],
+  "scripts": {
+    "test": "NODE_OPTIONS=--experimental-vm-modules jest",
+    "prepublishOnly": "npm run clean && npm run build",
+    "build": "tsc",
+    "clean": "rm -rf dist tsconfig.tsbuildinfo"
+  },
+  "author": "Daniel A.C. Martin <npm@daniel-martin.co.uk> (http://daniel-martin.co.uk/)",
+  "license": "MIT",
+  "keywords": [
+    "react-components"
+  ],
+  "dependencies": {
+    "@hods/sass-base": "workspace:^0.4.0",
+    "@not-govuk/component-helpers": "^0.7.2",
+    "govuk-frontend": "4.4.1"
+  },
+  "peerDependencies": {
+    "@not-govuk/docs-components": "^0.7.2",
+    "@storybook/addon-docs": "^6.4.0",
+    "react": "^16.9.55"
+  },
+  "peerDependenciesMeta": {
+    "@not-govuk/docs-components": {
+      "optional": true
+    },
+    "@storybook/addon-docs": {
+      "optional": true
+    }
+  },
+  "devDependencies": {
+    "@mdx-js/react": "1.6.22",
+    "@not-govuk/component-test-helpers": "^0.7.2",
+    "@types/react": "16.14.32",
+    "jest": "29.2.2",
+    "jest-environment-jsdom": "29.2.2",
+    "ts-jest": "29.0.3",
+    "typescript": "4.8.4"
+  }
+}
diff --git a/components/timeout-modal/spec/TimeoutModal.stories.mdx b/components/timeout-modal/spec/TimeoutModal.stories.mdx
new file mode 100644
index 00000000..968c370a
--- /dev/null
+++ b/components/timeout-modal/spec/TimeoutModal.stories.mdx
@@ -0,0 +1,38 @@
+import { Meta, Preview, Props, Story } from '@storybook/addon-docs';
+import { TimeoutModal } from '../src/TimeoutModal';
+import readMe from '../README.md';
+
+<Meta
+  title="Timeout Modal"
+  component={ TimeoutModal }
+  parameters={ {
+    chromatic: { viewports: [640, 480] },
+    description: 'HODS timeout modal',
+    jest: ['TimeoutModal'],
+    notes: readMe
+  } }
+/>
+
+# timeout-modal
+
+HODS timeout modal
+
+<Preview withToolbar>
+  <Story name="TimeoutModal">
+    <TimeoutModal />
+  </Story>
+</Preview>
+
+<Props of={ TimeoutModal } />
+
+
+## Stories
+### Standard
+
+A standard timeout-modal.
+
+<Preview>
+  <Story name="Standard">
+    <TimeoutModal />
+  </Story>
+</Preview>
diff --git a/components/timeout-modal/spec/TimeoutModal.ts b/components/timeout-modal/spec/TimeoutModal.ts
new file mode 100644
index 00000000..d4f8fe27
--- /dev/null
+++ b/components/timeout-modal/spec/TimeoutModal.ts
@@ -0,0 +1,23 @@
+import { createElement as h } from 'react';
+import { mount } from '@not-govuk/component-test-helpers';
+import TimeoutModal from '../src/TimeoutModal';
+
+describe('TimeoutModal', () => {
+  const minimalProps = {
+  };
+
+  describe('when given minimal valid props', () => {
+    const component = mount(h(TimeoutModal, minimalProps, 'Child'));
+
+    it('renders', () => undefined);
+  });
+
+  describe('when given all valid props', () => {
+    const props = {
+      ...minimalProps
+    };
+    const component = mount(h(TimeoutModal, props, 'Child'));
+
+    it('renders', () => undefined);
+  });
+});
diff --git a/components/timeout-modal/src/TimeoutModal.tsx b/components/timeout-modal/src/TimeoutModal.tsx
new file mode 100644
index 00000000..bcf1547e
--- /dev/null
+++ b/components/timeout-modal/src/TimeoutModal.tsx
@@ -0,0 +1,47 @@
+import { FC, createElement as h, useState } from 'react';
+import { StandardProps, classBuilder } from '@not-govuk/component-helpers';
+
+import '../assets/TimeoutModal.scss';
+import { Timer } from './Timer';
+
+export type TimeoutModalProps = StandardProps & {
+  /** Determines whether the modal should be opend or closed */
+  isOpen: boolean,
+  /** Starting value of the timeout timer in seconds */
+  timerDurationInSeconds: number,
+  /** Function called when the user clicks the modal button */
+  onContinue: () => void,
+  /** Function called when the user clicks the modal link */
+  onSignout: () => void,
+};
+
+export const TimeoutModal: FC<TimeoutModalProps> = ({
+  children,
+  classBlock,
+  classModifiers,
+  className,
+  isOpen,
+  timerDurationInSeconds = 300,
+  onContinue,
+  onSignout,
+  ...attrs
+}) => {
+  const classes = classBuilder('hods-timeout-modal', classBlock, classModifiers, className);
+
+  return (
+    <div {...attrs} className={classes('overlay')}>
+      <div role='dialog' aria-labelledby='modalTitle' aria-describedby='modalContent' className={classes('content')}>
+        <h1 id='modalTitle'>You will be signed out soon</h1>
+        <p id='modalContent' aria-live='polite'>To protect your information, you will be signed out in <Timer className={classes('timer')} timerFrom={timerDurationInSeconds}/>.</p>
+        <div className={classes('buttons')}>
+          <button role='button' onClick={onContinue}>Continue on this page</button>
+          <a role='link' onClick={onSignout}>Sign out</a>  
+        </div>
+      </div>
+    </div>
+  );
+};
+
+TimeoutModal.displayName = 'TimeoutModal';
+
+export default TimeoutModal;
diff --git a/components/timeout-modal/src/Timer.tsx b/components/timeout-modal/src/Timer.tsx
new file mode 100644
index 00000000..2f7c430b
--- /dev/null
+++ b/components/timeout-modal/src/Timer.tsx
@@ -0,0 +1,53 @@
+import { FC, createElement as h, useState, useEffect } from 'react';
+import { StandardProps } from '@not-govuk/component-helpers';
+
+export type TimerProps = StandardProps & {
+    /** Timeout starting value in seconds */
+    timerFrom: number
+  };
+
+export const Timer: FC<TimerProps> = ({
+    timerFrom,
+    ...attrs
+}) => {
+    const [runTimer, setRunTimer] = useState(true)
+    const [timer, setTimer] = useState(timerFrom);
+    const [formattedTimer, setFormattedTimer] = useState(Math.floor(timer / 60));
+
+    useEffect(() => {
+      let interval;
+      if(runTimer) {
+        interval = setInterval(() => {
+          setTimer((timer) => timer - 1);
+        }, 1000);
+      } else {
+        clearInterval(interval);
+      }
+      return () => clearInterval(interval);
+    }, [runTimer])
+    
+    useEffect(() => {
+      if(timer > 60) {
+        if(timer % 60 == 0) {
+          setFormattedTimer(Math.round(timer / 60));
+        }
+      } else {
+        if([60,40,20,0].includes(timer)) {
+          setFormattedTimer(timer);
+          if(timer == 0) {
+            setRunTimer(false);
+          }
+        }
+      }
+    }, [timer])
+
+    useEffect(() => {
+      return () => {
+        setRunTimer(false);
+      };
+    }, []);
+
+    return (
+      <span {...attrs}>{formattedTimer} {timer <= 60 ? "seconds" : formattedTimer == 1 ? "minute" : "minutes"}</span>
+    );
+};
\ No newline at end of file
diff --git a/components/timeout-modal/tsconfig.json b/components/timeout-modal/tsconfig.json
new file mode 100644
index 00000000..a8aad5c9
--- /dev/null
+++ b/components/timeout-modal/tsconfig.json
@@ -0,0 +1,14 @@
+{
+  "extends": "../../tsconfig.build.json",
+  "compilerOptions": {
+    "outDir": "dist",
+    "rootDir": "src"
+  },
+  "include": [
+    "src"
+  ],
+  "exclude": [
+    "dist",
+    "node_modules"
+  ]
+}