This site has been designed and constructed to the W3C's WAI accessibility AA rating. This means that the site can be navigated using the tab button and by pre-defined accesskeys.The site can also be read by screen readers, Braille displays and other access devices. There is a list of access devices available for people with different impairments further down the page.You can also find more information on accessibility by following the web accessibility links at the bottom of the page.
You can access the key features of this site without the need for a mouse using the following access keys:
Hold down the 'Alt' key and the access key, followed by the 'Enter' key.
Hold down the 'Ctrl' key and the access key.
The pages on this website comply with the recommended UK Government access keys standard.
All content images on this site are provided with descriptive ALT attributes. Where images contain important information, such as graphs and charts, alternative information is provided in the form of inline descriptions of tabular data.
All pages contain a link to the home page (access key 1) and search box (access key 4).
Jump to main content (access key C) is available to users of screen readers and speech browsers, to bypass graphical and navigational elements - such as the logo and header components - and jump directly to the main navigation.
Jump to primary Navigation (access key S) is available to users of screen readers and speech browsers, to bypass graphical elements - such as the logo and header components - and jump directly to the main navigation.
Skip navigation (access key S) is available to users of screen readers and speech browsers, to bypass repeated page elements - such as the top and side navigation links - and jump directly to the page content.
Further information resources on accessibility