Your last booking reference. After you book, this browser keeps the reference code of your last booking, with the date it is deleted (which shows the date of your appointment), only to fill the code in for you on the Find a booking page. It stops being used 7 days after the date of your appointment and is deleted the next time you open this site after that day, or sooner if you book again on this site or clear this site's data in your browser. It is not shared with any third party, and the code is sent to the business only when you search for your booking. Your language. This browser keeps the language this site is shown in (the one you chose, or else your device's language) in its local storage until you clear it, and in a cookie named lang that expires one year after your last visit, so the site opens in that language next time. The cookie is sent to this site with your requests so the page arrives in that language. Neither is shared with any third party, and both are removed if you clear this site's data in your browser. Page reload. If a page of this site fails to load or start, for example because the site was updated and your browser still has an older copy, the page reloads itself to fetch the current files. So that it does not reload again and again, this browser keeps the time of the last reload and the number of reloads in its session storage, only until you close the tab. They are not sent anywhere.