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 access keys.
The site can also be read by screen readers, Braille displays and other access devices. A list of access devices available for people with different impairments can be found under the 'Accessibility Devices' tab on the left-hand side of this page.
You can access the key features of this site without the need for a mouse using the following access keys:
C - Jump to main Content
N - Jump to primary Navigation
S - Skip navigation
1 - Home page
2 - Search
To navigate with access keys:
WindowsHold down the 'Alt' key and the accesskey, followed by the 'Enter' key.
MacintoshHold down the 'Ctrl' key and the accesskey.
The pages on this website comply with the recommended UK Government accesskeys 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.