If you’ve got any comments on the accessibility of this site, please get in touch and let us know. We always take all feedback seriously and act accordingly to improve the experience for our visitors.

Standards compliance

All pages comply with at least priority 1 guidelines of the W3 Web Content Accessibility Guidelines and the U.S. Federal Government Section 508 Guidelines. All pages validate as XHTML 1.0 Strict.


We have tried our best to use headings correctly and visitors that are using screenreaders can use shortcuts such as H to cycle throught headings and Shift + H to cycle backwards.


All links open in the same window unless otherwise stated in the title or text. There are no javascript: pseudo-links. All links can be followed in any browser, even if scripting is turned off.