As announced in the Guardian news paper, http://www.guardian.co.uk/technology/2010/jan/06/london-datastore-launch-johnson-mashups, Boris Johnson has launched a new GIS data store for London with hundreds of datasets available for free and to be used in mash-up.

San Fransisco's public data at work on Crimespotting.org Photograph: PR

The site will be fully available at the end of January and the following address: http://data.london.gov.uk/. So far the following data category seems to be available:

Business and Economy

Crime and Community Safety

Demographics

Employment and Skills

Health

Housing

Planning

Transparency

The current list of datasets which will be made available is available here: http://data.london.gov.uk/datastore/data-packages-launch. It seems that more than 200 datasets will be made available.

Chanel 4 is also offering a fund of £200,000, through the 4IP Developer’s fund, in total to two companies or individuals with an outstanding idea for a product or application that uses information available on this site.