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For a small number of our visitors this site does not display correctly (the text is very small).
If this is the case for you, please accept our apologies. This is because we are using units of measurement ('ems') instead of the traditional pixels, in order to make this site accessible to people with disabilities.
Upgrading your browser to the latest version should put it right, or alternatively you may wish to download Mozilla Firefox.
If, after trying the above, you are still having problems please let us know.