This is a good point, data being available and free does not itself give you rights of reuse. I couldn't find an obvious license (note - without a license data

This is a good point, data being available and free does not itself give you rights of reuse. I couldn't find an obvious license (note - without a license data should be considered to be the most restricted) but a lot of the data from companies house is under the OGL : http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ http://www.nationalarchives.gov.uk/doc/open-government-licen... Almost all reuse is fine, including commercial, however this does not extend to personal data. This is more of a broad issue with the data rather than a complaint about the autograph hunting which I think is a nice fun application.