We are committed to ensuring that our website is accessible to everyone. We try to ensure that it is easy to find your way around and the text is written as simply as possible but with a view to retaining accuracy.

We believe the site meets U.S. Federal Government Section 508 Guidelines, and that pages meet the priority 1 and 2 guidelines of the W3C Web Content Accessibility Guidelines.

If you should you experience any difficulty in accessing or using this website, please don't hesitate to contact us.

Page structure and style

This site is built with valid XHTML. Our content is properly structured, using headings and paragraphs. It uses valid CSS for layout. The site is also usable with stylesheets disabled if you prefer, or with your own stylesheet.

Text size

Text can easily be resized if required. (The way we have specified text size means that even Internet Explorer will allow text size adjustments to our site.)

To do this, you can use the AAA function which appears at the top of each page. Alternatively the ‘View’ menu of your browser will contain commands for changing text size. Some browsers allow you to change text size using the control (or command) key and the + and - keys (or the mouse wheel if you have one).

You can also use your browser settings to alter the font sizes and page colours, on this and other websites.

Other accessibility issues

We are dedicated to meeting accessibility requirements in the following areas:


Our website does not include frames (i.e., separate sections of the display area that are generated from different webpages).


Our website provides equivalent text for images that convey information.


Our website does not rely on colour to convey information. You can change to high contrast–text by using the AAA function which appears at the top of each page.

PDF (Portable Document Format)

Some material on our website is provided in PDF Format, and can be accessed using software such as Adobe Reader.

For more information see Information for users with disabilities from the Adobe website.

Scripts, applets and plug-ins

Our website does not use applets (i.e., programs designed to be executed from within another program) or plug-ins (i.e., programs that add features to a standard browser), and the use of javascript has been strictly limited.