This site also uses Google Analytics cookies which collect anonymous information to help us analyse website usage including which pages visitors are viewing, where in the world our visitors are, how they found the website and whether they've been before. These cookies tell us how the website is being used so that we can continue to create useful content for our visitors in the future.
Finally, we use a single cookie as part of the live Twitter feed on the right of the website.
Cookies are not dangerous, they do not contain viruses and they cannot access any of your personal information. If you would prefer to disable cookies on the GA website, the AboutCookies.org website explains how to go about it, but we must warn you that doing this may cause some features of our website to stop working properly.