Using aggregated data (we do not identify individuals) this information shows us how people use our site, for example which pages are popular and which are not. This in turn will help us to improve the online experience for people using our site. A cookie in no way gives us access to your computer or any information about you, other than the data you choose to share with us.
A little bit more about cookies:
Cookies are files sent by web servers to web browsers, and stored by the web browsers.
The information is then sent back to the server each time the browser requests a page from the server. This enables a web server to identify and track web browsers.
There are two main kinds of cookies: session cookies and persistent cookies. Session cookies are deleted from your computer when you close your browser, whereas persistent cookies remain stored on your computer until deleted, or until they reach their expiry date.