In response to my blog post:
http://pigsonthewing.org.uk/politician-open-licenced-pictures-please/
Monmouthshire County Council have open-licensed portrait photos of all their councillors (post the recent election), plus their Chief Officer.
I've already used two, on:
http://en.wikipedia.org/wiki/Monmouthshire_County_Council
Please encourage your contacts in local government and other public bodies to do likewise - feel free to refer them to my blog post for details.