Cookies on

Cookies are small files saved on your phone, tablet or computer when you visit a website.

We use cookies to store information about how you use this website, such as the pages you visit.

We use two types of cookies. You can choose which cookies you’re happy for us to use.

Cookies that measure website use (analytics cookies)

We use Google Analytics and Hotjar to collect information about how you use the website. We use this data to help make the website better.

Google Analytics and Hotjar set cookies that store anonymised information about:

We do not allow Google or Hotjar to use or share the information about how you use this website.

List of cookies that measure website use
Name Purpose Expires
_ga Help us count how many people visit the website by tracking if you have visited before 2 years
_gid Help us count how many people visit the website by tracking if you have visited before 24 hours
_gat Used to manage the rate at which page view requests are made 1 minute
_hjClosedSurveyInvites Tell us whether a Hotjar survey invite has been closed to stop it displaying again 1 year
_hjDonePolls Tell us whether a Hotjar feedback poll has been completed to stop the same poll reappearing 1 year
_hjMinimizedPolls Keep Hotjar feedback poll widgets minimised (once minimised by the user) when the user navigates through the website 1 year
_hjDoneTestersWidgets Set when a user submits information in the Hotjar recruit user testers widget. They stop the form reappearing once it has been completed 1 year
_hjIncludedInSample Lets Hotjar know whether a user is included in the sample for tracking user journeys to important pages on the website 1 year
_hjShownFeedbackMessage Set when a user minimises or completes a Hotjar feedback survey. The survey will stay minimised if the user navigates to a page where it is set to show 1 year
_hjid Help us track users who visit the website multiple times. A unique Hotjar user ID is used to link their visits together 1 year
_hjRecordingLastActivity Updated when a user recording starts and when a user performs an action on a page that Hotjar records. Found in session storage rather than cookies Per session
_hjTLDTest Stored temporarily and used to determine the root (or top-level) domain so that tracking works on all pages Per session
_hjUserAttributesHash Store user attributes during a user’s browser session so Hotjar knows when an attribute has changed and needs to be updated Per session
_hjCachedUserAttributes Store user attributes that are sent through the Hotjar identify API whenever the user is not in the sample. Attributes are only saved if the user interacts with a feedback tool Per session
_hjLocalStorageTest Used to check if the Hotjar tracking script can use local browser storage Per session
Do you want to accept analytics cookies?

Essential cookies

Essential cookies keep your information secure, and do things like remember your preferences and the choices you make whilst you use the website.

They always need to be on.

List of essential cookies
Name Purpose Expires
cookie_settings Saves your cookie consent settings 1 year
contrast Retains active state of accessibility services 1 year


We use Smart Survey to collect feedback about the website, and recruit participants to take part in user research activities (for example, usability testing). If you complete either of these surveys, SmartSurvey will save extra cookies to track your progress on their website.

How we use the information we collect

To find out how we collect, store and use information about you or your visit, see our privacy notice.