The UK Government Category List (GCL) is a type of controlled vocabulary called a taxonomy, for use in choosing Subject metadata.

The use of GCL terms in the metadata of all government resources is intended to facilitate, encourage and simplify automatic categorisation.

The website which publishes the GCL documentation is:

http://www.govtalk.gov.uk/

A website which monitors UK eGovernment developments is:

Kablenet

A website which is particuarly interested in international eGovernment and in the adoption of GCL is Support Insight