Style sheets

This site uses Cascading Style Sheets (CSS) for visual layout. If your browser supports it, style sheets can be disabled or over-ridden to customise the appearance of the website, to your preference.

Font sizes

You can change the font size of each page to your preference through the browser.


Labels are used to assist access to form fields. All forms follow a logical tab sequence.


Tables are not used for general site layout.


The site has been designed so that the main body content is easy to read through its colour combinations. If you have any difficulty in reading parts of the site please contact us.


We have worked hard to ensure that our links are meaningful, and some links are explained in greater detail by using a title attribute.


We cannot guarantee full functionality of the website (in particular the main navigation menu) if you are using a browser version earlier than Chrome 20.x, Firefox 10.x, Internet Explorer 9, Opera 12. We would recommend upgrading to a later version in order to be able to view the website as intended. If this is not possible you may find the website easier to use by disabling CSS altogether - please see your browsers help documentation for further information.