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This website has been built to comply with accessibility guidelines. In order to do this, we’ve used techniques supported by modern browsers (Internet Explorer 5.0 or later, Netscape 7.0 or later, Safari or Mozilla Firefox).

Modern browsers also make navigation faster and allow us to provide more advanced content and features. This means that, if you are using an older browser, you may be viewing our website in a more simplified form.

You can download the latest version of your preferred web browser below:


The site has been designed to make it as easy and quick to navigate as possible.

Get detailed information via the menu that appears on the left-hand side of the screen.


We have built this website to meet W3C accessibility standards. These standards aim to give all users equal access to websites.

To make this website as easy as possible for you to read, you can control the size of the text and the contrast between the text and the background. We have also implemented access keys. These are keyboard shortcuts that you can use instead of a mouse. You can find more information about these options on our Accessibility page.

Adobe PDF

Adobe PDF is a file format which saves existing documents with all their original formatting. This means that, when you look at a PDF document, you will see the formatting and layout that the author intended, even if you do not have the program they originally created it in.

In order to view PDF documents, you will need to have the free Adobe Acrobat Reader software installed on your computer.

Downloading Free Adobe Acrobat Reader

You will need a free Adobe Acrobat Reader, which you can download from the Adobe website.

On the Adobe website, make sure that you choose the right options in the drop-down boxes before you download (e.g. Windows XP for your operating system). Make a note of where you are downloading the installation file to (e.g your desktop). After the download has completed, locate the installation file on your computer and double click on it. The installation programme will do the rest.

Once the Adobe Acrobat Reader software has been installed you will be able to read Adobe PDF files.

Saving a PDF

To save a PDF to your computer, right-click your mouse over the PDF link and select ‘save target as’ or ‘save link as’. If you have an Apple computer, click the link whilst holding down the ‘option’ key. You can then save the PDF where you want on your computer.

Accessible PDFs

We recommend that users download the latest version of Adobe Acrobat Reader to access Adobe PDF files.

Adobe Reader 7.0 enables users, read and use Adobe PDF documents and forms more easily – and across multiple languages.

For further information about accessibility and PDFs, please visit

Troubleshooting PDFs

Q – I've clicked on the link but my browser's just gone blank?
A – Browsers have different ways of downloading PDFs. Most will show a progress meter having asked you where you would like the file to download to on your machine. However, some browsers (such as Internet Explorer 5 with Acrobat 4) load in the PDF page-by-page and don't show a progress meter. In fact it is downloading – the first page should appear after a few minutes.

Q – I've downloaded the file but nothing has appeared?
A – You may need to go to where the file was downloaded on your local drive (probably your c:/windows/temp directory somewhere) and click on it from there. If it still doesn't work, your Reader is not working properly and should be reinstalled.

For further troubleshooting suggestions, see the Adobe technical support.

Help on Video

To view or listen to the videos on the site you need to have Windows Media Player or Real Player installed on your machine. You can download Windows Media player free from Microsoft website and Real Player from the Real Player website.

Video Troubleshooting

Q – I clicked on the link and nothing happens.
A – It is likely to be due to Internet congestion. You can either wait for the video to start playing, or come back later and try again.

Q – Do I have to pay for Windows Media Player or Real Player?
A – No. Windows Media Player is a free download from Microsoft and Real Player is a free download from Real Networks.

Adobe Flash

The site may contain animations and enhanced navigation features, which are created in Flash format. If you wish to view them, you will need Adobe Flash Player, which is available free from the Adobe site.

Download Macromedia Flash Player

If you do not have Adobe Flash Player installed on your computer, you will automatically see alternative content for anything created in Flash.