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Crown copyright 2010

The material featured on this website is subject to Crown copyright protection unless otherwise indicated. You may re-use the Crown copyright protected material (not including the Royal Arms and other departmental or agency logos) free of charge in any format for non-commercial research, private study or internal circulation within your organisation. The material must be acknowledged as Crown copyright and you must give the title of the source document/publication.

For any other proposed use of the material please apply for a Click-Use PSI Licence.

Office of Official Publications
Information Policy Team
Richmond
Surrey
TW9 4DU

e-mail: licensing@opsi.gov.uk

Where we have identified any third party copyright material you will need to obtain permission from the copyright holders concerned.

For further information on Crown copyright policy and licensing arrangements, see the guidance featured on the (Opens new window) OPSI website

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All the material previously located in the ‘Quick Links’ area of this page can now be found in the new ‘Further Further Technical Information’ section.

Quick Links

Find out how to make sure you're seeing the latest version of the site

Further Technical Documents

All the material previously located in the ‘Quick Links’ area of this page can now be found in the new ‘Further Further Technical Information’ section.