Click-use licenses:
Click-use licenses are HMSO's on-line licenses, and are necessary for when publishing material covered by crown copyright on the web. The LSE has a click-use license.
Please check that the material you wish to publish is covered.
http://www.hmso.gov.uk/copyright/licences/click-use-home.htm

Data Protection Registration Number: Z7044954
This number is supplied by the Information Commissioner and is necessary for anyone processing personal information. Some data providers may request that you quote the LSE's number when applying for access to data.
http://www.informationcommissioner.gov.uk/