This website has been built with the aim to be accessible to all users.

If you have any problems with using the website, or if you have any comments or suggestions, please email us at To best help us deal with any problems, please mention what browser and/or screen reader you are using.

Font size

You can change the text size in Microsoft Internet Explorer by selecting View > Text size followed by your preferred text size from 'Smallest' to 'Largest'. The default setting is 'Medium'.

You can change the text size in Mozilla Firefox by selecting View > Text size followed by 'Increase' or 'Decrease'. To return the text size to its default setting, select 'Normal'.


If you find websites easier to read with a dark background or different colour scheme, you can change the look of this site by clicking the 'colour' links at the top of any page. Simply click 'reset' to go back to the original style.


If you use your own stylesheets for reading content on the web, we have created a text-only version of the site to avoid any conflicts with your settings. Using the text-only link at the top of the page, you can remove all styles - leaving only the text content of the website.