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It is our aim that this website meets or exceeds the provisions of the World Wide Web Consortium Conformance Level AA. You can read more about these standards at


If you find that the text on our site appears either too large or too small, you can adjust it through your web browser controls.  Different browsers, have different methods for changing these settings, so you will need to consult the ‘Help’ section on your browser to find out how to do this.

Browser compatibility

Our site is built to work with up to date versions of all popular web browsers, such as

Windows: Internet Explorer 11; Edge; Google Chrome; and Mozilla Firefox.

macOS: Safari 12 and later; Google Chrome; and Mozilla Firefox.

iOS: Safari for iOS 12.1 and later; and Google Chrome.

Android: Google Chrome; and Samsung Internet.

PDF files

To view and print Portable Document Format (PDF) files, you will need appropriate software such as the free Adobe Reader software. If you don’t have Adobe Reader, you can download it from