Heart of the School
Edublog set up by Caroline Roche to advocate for school libraries
iLibrarian
News and resources on Library 2.0 and the information revolution by Ellyssa Kroski - please note this blog is no longer active but archives are still available
Voices for the Library
Advocacy for public libraries in the UK - "Promoting the need for and value of trained librarians within a free and open-to-all UK public library service".