Ease of use

This site's layout endeavours takes into account all potential users and is compatible with popular screen reading software.

Please note that unless otherwise stated all links will open within the same browser window.


If you have any problems finding the information you require try using the keyword search located at the top of the left-hand navigation on every page. There are extensive advanced search features which are explained here.


Flexibility is key to the design of this site and consideration has been given to users with different perceptual abilities.

Choice of Appearance

This site has two default views, the full graphics version and a much plainer version for those with older browsers or restricted bandwidth. You can choose which style to use in the menu on the right hand side of every page.

Increasing text size.

Some users might find screen text easier to read by increasing the size at which text is displayed. To do this you should simply adjust your browser's settings.