Legal statements

Legal statements

Our website aims to conform to Level A of the W3C's "Web Content Accessibility Guidelines 1.0". More information on these guidelines is available at

We recognise the importance of providing a website that is accessible to all user groups, including those with a disability:

  • We have implemented the following accessibility features on this website to make it easier to use for people with a disability
  • You many need to review the accessibility features in your browser
  • Please let us know if you have any questions or feedback regarding the accessibility of this site, or if you experience difficulty using it.

Please note: While we aim to provide full accessibility to all content on our website, some older pages may not yet meet all the standards outlined here and due to restrictions in the functionality of the Content Management System, the nesting of heading levels may not be correct. Furthermore, some of the third-party content, such as other websites to which we provide links, may not be as accessible as our website.

Accessibility features on this website

The following features improve navigation for screen reader users, keyboard navigation and users of text-only browsers

Navigation shortcuts

At the start of every page is a short menu that allows you to jump to the main content of that page.  

Sighted users who use the keyboard to navigate will see these links appear on screen when using the Tab key to navigate through the page.

Structured, semantic markup: Headings and navigation menus

  • HTML heading tags are used to convey document structure. H1 tags are used for main titles, H3 tags for subtitles. 
  • Navigation menus are marked up as HTML lists. This ensures that the number of links in the list is read out at the start and it can be skipped easily.


All content images used in this site include alternative descriptions. Purely decorative graphics include empty alternative descriptions.


If you wish to override the site's colours, you can import your own style sheet within your browser preferences.

Font sizes

You may change the font size of this document to your preference through your browser:

  • In Internet Explorer, select View, then Text Size, and then your preferred size
  • In Firefox 3 and above, select Zoom Text Only to only change the text size, or unselect it to change the size of the entire page.

If you wish to override the site's font settings, you can import your own style sheet within your browser preferences.

Style sheets

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

You may import your own stylesheet into this website.


JavaScript is used on the website to improve usability but some protected content requires the use of Javascript to login and perform downloads. However it is possible to browse the website without JavaScript.

Accessibility features in your browser

Internet Explorer

Choose Help: Contents: Accessibility


Questions or feedback

If you have any questions or feedback regarding the accessibility of this site, or if you experience any difficulty using it, please contact us.

Accessibility references

W3 accessibility guidelines, which explains the reasons behind each guideline