Cookies
You need to have "cookies" enabled by your browser in order to log in and/or use the self-test section of this website. Cookies are tiny pieces of random text that enable information to be remembered when you pass from one page of a website to another. They are usually turned on already, but some people deactivate them in the belief that it is safer.
The cookies used by this website are called "session cookies" or "temporary cookies". They are deleted from your computer as soon as you close your internet browser. They do not "store" any identifiable information about you. A typical cookie might look like this: "30c1efd8cc429ff33f131ac5dde7daf3".
If your browser is not allowing you to use cookies, please click here and follow the instructions.
If you have enabled cookies but it still doesn't work, then it is possible you are using a work computer and your employer has blocked cookies. Please contact your IT department and ask them to allow session cookies for this site.
If you are still having problems, please contact us, and we will endeavour to help wherever we can!