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All pages on this site are WCAG (Web Content Accessibility Guidelines) 1.0 approved, and comply with all priority 1 and 2 guidelines of the World Wide Web Consortium (W3C) Web Content Accessibility Guidelines.

This site contains many features to help users with disabilities navigate easily. These include special links to enable users to jump over navigation bars to the next item. These features are described below.

This website is designed for maximum accessibility. Frames are not used, tables are only used for tabulating data and images are kept to a minimum and always described in alt text.

Standards Compliance

This site is WCAG AA approved, complying with all priority 1 and 2 guidelines of the W3 Web Content Accessibility Guidelines.
The site uses structured semantic mark-up where possible. For example, internal content pages use H1 for all top level headings and list mark-up for internal navigation where possible. Using real list mark-up is best. Since visual presentation is in the CSS declarations, it does not clutter up the page, so both JAWS and Home Page Reader simply read your list for what it is: a list.

NB: The XHTML, CSS and WCAG 1.0 AA compliance validations on this site were time-stamped as valid on the 20/05/2008. However, with a dynamic site like this validations are fragile and can destablise. If you noticed any aspect of the site that may have deteriorated it's validations from beyond this date, please take time report to us. Thank you.

General Site Features

Skip to content.

Speech and braille users generally read the page from top to bottom. On most sites, this means hearing a long list of repeated information before reaching the main content on any page. On this web site, the navigation bar is always preceded by a link (invisible to sighted users) labelled "Skip to site content" Select this link to jump to the main content on the page.

Using the Tab Key to jump between links

You can use the tab key on your keyboard to jump from one link to the next. All navigation bars in the site provide a logical order for this.

PDF format (.pdf) or Adobe Acrobat format

Some of the information on this website is available in PDF format to provide for easier reading and printing offline. This format is not (except in the case of the latest version, version 5) readily accessible to users with disabilities.

Font/Text Sizes

This site makes use of style sheets that allow for flexible resizing of fonts to meet user requirements. If you find that font sizes are too small simply increase the default font size used in your web browser software (for example, in Internet Explorer font sizes can be changed in the View Menu under 'Text Size'). This feature may not work correctly in all web browsers.

Navigation Aids

Top level navigation is visible at all times.
A breadcrumb link is available at the top each page to assist in navigation.
The homepage and all internal pages include a search box.


All content images used in the home page and elsewhere include descriptive ALT attributes.
Purely decorative graphics include null ALT attributes.

Visual Design

This site uses cascading style sheets for visual layout and all presentation has been completely seperated from content with the exception of layout tables.
If your browser or browsing device does not support style sheets at all, the content of each page is still readable.

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