The GOV.UK Prototype Kit puts small files (known as ‘cookies’) on to your computer.

We use cookies to:

  • record the notifications you've seen so we don't show them again
  • make prototypes work as well as possible

These cookies aren’t used to identify you personally.

You’ll see a message on the site before we store a cookie on your computer.

Find out how to manage cookies.

Our cookie message

You'll see a message about cookies when you first visit the GOV.UK Prototype Kit. We’ll store a cookie so that your computer knows you’ve seen it and knows not to show it again.

Cookies relating to our cookies message
Name Purpose Expires
seen_cookie_message Saves a message to let us know that you've seen our cookie message 28 days

Storing users' answers within prototypes

To help prototypes work as well as possible, each prototype stores a cookie to remember what users select on question pages. This allows prototypes to have branching pages and show users' answers on pages like the 'Check your answers' summary page.

Cookies relating to storing users' answers within prototypes
Name Purpose Expires
govuk-prototype-kit-<UNIQUE-ID> Storing users' answers from question pages 4 hours