We recognize the importance of providing a website that is accessible to all users. As such we have made every effort to ensure that our site can be easily used by as many people.

Headings and navigation menus

HTML heading tags are used to convey document structure. H1 tags are used for main titles, H2 tags for subtitles, etc. Navigation menus in this site are marked up as HTML lists to ensure that the number of links in the list is read out at the start and it can be skipped easily.


All images used in this site include descriptive alt tag attributes. Where an image has no use other than being decorative the alt tag is set to null to allow easy reading of the site by all users.

Font size

Most of the font sizes we use on our site are sizable. You can change the font size to make it either larger or smaller via your browser settings.

You can change the font size in the following ways depending on your browser:
In Internet Explorer, select View, then Text Size, and then your preferred size.


This site uses cascading style sheets for all visual layout. If your browser or browsing device does not support stylesheets, the use of structured semantic mark up ensures that the content of each page is still readable and clearly structured.


The use of JavaScript has been used throughout this website, especially the coverage maps area of the site. If you require to view this area of the site javascript will be required. On all other pages the contents should still accessible if JavaScript requires to be turned off.

Useful links:

If you would like to know more about accessibility and the Internet, you may be interested in the following websites: - W3C accessibility guidelines - British Computer Association of the Blind - BBC web pages specially constructed to improve clarity for visually impaired users - the website also includes other useful links - The Disability Discrimination Act (DDA) 1995