We have tried to make this web site as usable as possible but we are not experts in this field and we have no access to screen readers or other assistive technology to test what we've done. If you have problems with the site please let us know and we'll do our best to improve things. Any suggestions for improvement will be welcome.
If your eyesight is poor you might try increasing the text size your browser uses. Each browser does this differently, all the browsers on the Compatibility page provide the facility.
You should be able to navigate the pages using the keyboard or equivalent.