I have asked the chief executive of the Central Office of Information to write to the hon. Member.
Letter from Mark Lund, dated 2 February 2010:
As Chief Executive of the Central Office of Information (COI), I have been asked to reply to your Parliamentary Question  regarding the PR Framework.
The COI only hold the details of companies included on the current framework and a copy has been placed in the Libraries of the House.
The current Pubic Relations Companies that are included on the COI framework are also listed on the COI website
Information on companies from previous frameworks is not held centrally.