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This website is designed and built to W3C accessibility standards. This website allows equal access to people with disabilities using technologies other than standard web browsers, such as screen readers.

To make this website as easy as possible for you to read, you can control the size of the text.. We have also implemented keyboard shortcuts that you can use instead of a mouse.

You can control:

  • The size of the text
  • The stylesheets

Font sizes

You can use your browser to change this document’s preferred font size.Use the "enlarge text" icon (+, access key [ALT + + + ENTER]) or "minimise text" icon (-, access key [ALT + - + ENTER]) from the service menu at the left of the pages.

In Internet Explorer, select:

  1. View
  2. Text Size
  3. The preferred text size


You may import your own stylesheet into this website as follows:

In Explorer

  1. Select Tools
  2. Select Internet Options
  3. Click on the Accessibility button
  4. Click on up to three checkboxes to ignore colours, font styles or font sizes
  5. In the same window, to change your stylesheet, select the checkbox: 'Format document using my stylesheet'
  6. Browse to your stylesheet and click OK

In Netscape

  1. Select Edit
  2. Select Preferences and then Appearance
  3. Specify your own colours and fonts

Access keys

Access keys are keyboard shortcuts that you can use instead of your mouse to navigate to certain pages in the site.

Windows users

If you are using Windows, hold down the Alt key and press the appropriate access key for the page you want to go to, then release both keys. Press Enter to go to the page.

Most browsers support jumping to specific links by typing keys defined on the web site. On Windows, you can press ALT + an access key followed by Enter; on Macintosh, you can press Control + an access key.

All pages on this site define the following access keys:

  • Access Key H - Home
  • Access Key C - Contact Us
  • Access Key M - Site Map
  • Access Key S - Search
  • Access Key D - Disclaimer
  • Access Key A - Accessibility Statement
  • Access Key H - Help

Mac users

If you are using a Mac, hold down the Ctrl key, then press the appropriate access key for the page to go there automatically.

To go to the:

  • Accessibility page, press and hold down Ctrl and the '0' key
  • Home page, press and hold down Ctrl and the '1' key.
  • Main page content, press and hold down Ctrl and the 'S' key.
  • Site map, press and hold down Ctrl and the '3' key.

Please note that your browser may not support access keys.


All content images used in this site include descriptive ALT attributes. Purely decorative graphics include null ALT attributes.


Wherever possible we have provided a HTML version of PDFs on this site, however if you would like to read a PDF document with a screen reader please follow this link to the Access Adobe website.


This site has no nested tables, we have removed tables wherever possible and formatted them so users using screen reading devices to easily distinguish tabular information.

Site map

There is a site map which can help you navigate around the site.