The DDA (Disability Discrimination Act) says that websites must be made accessible to blind and disabled people. So how can you check that your website actually has good accessibility? There are a number of basic tests you can make to address some of the main accessibility issues.
Check you can access all areas of your website without the use of a mouse.
Can you navigate through your website using just tab, shift-tab and return in Internet Explorer? If not, then neither can keyboard- and voice-only users.