I have been asked to reply.
The Power of Information report was written by Tom Steinberg (MySociety) and Ed Mayo (National Consumer Council). It was published on 7 June 2007.
The Government accepted the recommendations of the Power of Information Review in the Official Response, published on 25 June 2007. The response can be found online at:
http://www.cabinetoffice.gov.uk/~/media/assets/www.cabinetoffice.gov.uk/publications/reports/power_information/power_information_response%20pdf.ashx
An interim progress report was published in March this year at:
http://www.cabinetoffice.gov.uk/reports/power_of_information.aspx
Copies of both documents have been placed in the Library.