We believe that making our site accessible to all users is important. To do this we believe it needs to be easy to use – good usability will help all users – and compliant with the W3C Web Accessibility Initiative (WAI) guidelines. We have attempted to make all pages on the site compliant with ‘AA’ accessibility requirements, and ‘AAA’ where possible. If you think it could be better please let us know!


Your assistive software (e.g. Opera, JAWS) may allow you to navigate by heading – our site supports this.