I submitted a request to OPSI (HMSO) to release pictures of MPs and Lords under a free licence. They are a number of problems, for example OPSI don't own the copyrights. However, we can use their 'unlocking' tool to show there is a demand.
I find it amazing that thee aren't free pictures of our representatives. In the US, pictures of Senators and Representatives are Public Domain.
Anyway, to see more go to http://www.opsi.gov.uk/unlocking-service/2009/05/16/PhotographsOfLordsAndMPs .