ADi Group is committed to making this website as usable and accessible as possible by adhering to best standards and practice in web design. All pages use structured, semantic XHTML. Visual styling is provided by Cascading Style Sheets (CSS), and enhanced user interaction is provided by JavaScript.

For further information about this website, please read our Website Terms & Conditions.

If you have any questions about the website, please contact ADi Group at

Requirements for viewing this site 
This website is best viewed on an up to date browser, with a screen showing at least 256 colours with the resolution set to 1024 x 768 or higher.

Text sizes

Modern browsers support either text resizing or page zooming which allows users to control the size of site content, including font.

Microsoft Internet Explorer 6 does not support W3C standards with regard to text sizing, you would therefore need to upgrade your browser, if you have resizing issues.

Otherwise, increasing the text size is dependent on your browser. For Internet Explorer, select ‘View’ from the menu, then ‘Text Size’. For Firefox, hold down CTRL and press + or – to alter the text size.

Downloading documents from this site 

There may occasionally be downloadable documents on this site in PDF format. They can be accessed with Adobe Acrobat reader to access. You will need Adobe Acrobat Reader program which is available free of charge from the Adobe website at

Printable pages

All pages are designed to print completely, and will use a reduced amount of ink.