Web Standards

All pages on this site should be valid to Extensible Hyper Text Mark-up Language (XHTML) 1.1 and use structured semantic mark-up and Cascading Style Sheets (CSS).

This website conforms to the Guidelines endorsed by the Royal National Institute for the Blind (RNIB) and supports the Worldwide Web Consortium's (W3C) Web Content Accessibility Guidelines 1.0, Level AA, to ensure a Web accessibility standard.

Access keys

An access key allows a website user to quickly jump to specific areas of the site by use of a keyboard. For more information go to

Use of access keys depend on your computer's operating system:


With Windows-based systems the user has to press the 'Alt' key and the access key (followed by pressing the 'Return' or 'Enter' key for MS Internet Explorer).


With the Macintosh system the user has to press the 'Ctrl' key and the access key.

Access key codes

0 - Accessibility

1 - Home

3 - Site map

4 - Search

9 - Contact us

S - Skip menu

Tab order and skip menu function

In case you are someone who uses the tab key to get around a site - we have built the site with the creation of a logical tab order in mind. We have also provided the option to skip over the menu on each page, so you don't have to tab through each menu item on every page you visit.

Screen reader users

We have created a logical reading order on the site to help your comprehension of the content when using a reader. We have also used headings and semantic link text to allow you to navigate the site with ease.

Style sheets

The site uses style sheets so if your browser does not support CSS or you wish to use your own style sheets, you can do. If you are not sure how to do this, follow the relevant link below for your browser.

Flash replacement

This site uses Flash replacement methods (sIFR) to display headers. If you would like to you can switch it off here, or back on again.