How we can help you access our pages

Alternative text

All images on this site are accompanied by a brief alternative text that identifies an image or its function. This alternative text is generally only visible when the browser's automatic image loading feature is turned off.


All text links for other pages or websites are written so that they make sense when read out of context.



Most PDF files on this site are tagged to allow basic accessibility. For more information about PDF accessibility see the Adobe website and for more help with Acrobat files generally – or for a link to download Acrobat Reader – see the help page.


Text size

The text on this website has been styled using a non-fixed value in a style sheet. This means that users can easily change the text size in their browser settings.


By telephone

You can contact us using the Relay UK Service (previously Next Generation Text Service)

Relay UK Service is free to use, normal call charges apply. For more information visit