Changes in the law mean that from 26 May 2011, we need your permission to save cookies on your computer. Cookies are small files which are sent to your browser and stored on your computer's hard disk. Some pages on this website require cookies to be enabled to work correctly. For example you will not be able to log into password protected areas without cookies.
The cookies we use are Google Analytics (web analytics cookies) and session cookies to enable access to secure areas of the website. Google Analytics cookies are used to help record your use of this website. They are used to collect statistics about site usage such as when you last visited the site. This information is then used to improve the user experience on our website. The Google Analytics cookies contain randomly generated IDs used to recognise your browser when you read a page. The cookies contain no personal information and are used only for web analytics. We encourage you to accept the cookies our website uses as they help us to improve the user experience for you and many others.