Cookies are small amounts of text that web sites, like this one, ask your web browser to store for a time, so that the web site can provide the right information in the right format for you. The web site will tell you much, much more about other uses of cookies.

You may also want to know how we treat your privacy.

Cookies are used in the provision of this service, but only to improve your experience. We do not place third-party advertisements or link to marketers, so they cannot place third parties on your computer. However, social media sites such as Twitter or Facebook may place cookies.

The ‘session’ cookies store information strictly necessary during your browser session and are intended to be destroyed when you close your web browser (some browsers, like Firefox, have the capability to restore your previous session, so these cookies are not destroyed immediately).