Jonathan Neil Mendelsohn, Baron Mendelsohn (born 30 December 1966) is a British lobbyist and Labour political organiser. He was appointed the Director of General Election Resources for the party in 2007.
With Neal Lawson and Ben Lucas, he founded LLM Communications in 1997, a lobbying firm with notable access to the new Labour Government. He has been a spokesman and lobbyist for the gambling company PartyGaming.
He had written to controversial Labour donor David Abrahams claiming he was one of Labour's "strongest supporters". In 1998 he was caught on tape along with Derek Draper boasting to Greg Palast, an undercover reporter posing as a businessman, about how they could sell access to government ministers and create tax breaks for their clients in a scandal that was dubbed "Lobbygate". Draper denied the allegations.
In the same incident Mendelsohn was approached by an undercover journalist posing as a representative of American energy companies who were seeking to ignore environmental laws. Despite LLM's claim that "we believe that there will be a new breed of 'ethical winners' who will demonstrate that businesses no longer operate in a moral vacuum", Mendelsohn went on to advise the reporter to rephrase their plans into language that sounded "Earth-Friendly" going on to say "Tony [Blair] is very anxious to be seen as green. Everything has to be couched in environmental language – even if it's slightly Orwellian."
Mendelsohn is on the board of directors of the New Labour pressure group Progress, and is a trustee of the UK charities the Holocaust Educational Trust and the UK arm of the New Israel Fund. He is a former chairman of Labour Friends of Israel, of the Finchley United Synagogue, and the Union of Jewish Students.
He is married with four children. His wife Nicola, née Clyne, now Lady Mendelsohn, was appointed Facebook's Vice-President for Europe, the Middle East and Africa in May 2013. She was formerly chairman of the advertising agency Karmarama, deputy chairman of the advertising agency Grey London and past President of the Institute of Practitioners in Advertising.
- "Companies House WebCHeck – PROGRESS LIMITED". Companies House. Company No. 03109611. Retrieved 16 June 2012.
- "Labour appoints election director". BBC. 9 August 2007. Retrieved 17 June 2012.
- Christopher Hope (29 November 2007). "Jon Mendelsohn profile: a real Mr Fix-It". The Daily Telegraph. Retrieved 30 November 2007.
- Wheen, Francis (7 February 2001). "Social justice – that's so old Labour". The Guardian. Retrieved 29 November 2007.
- Comment is Free… but journos are scared « Follow The Money
- Party Gaming communicator now Labour Party Fundraiser
- 'You're not up to the job Gordon': Cameron launches blistering attack over donor scandal, Evening Standard, 28 November
- Greg Palast (1 May 2005). "Britain for Sale". Retrieved 29 November 2007.
- "You must remember this". The Observer. 1 April 2001. Retrieved 29 November 2007.
- "Draper accuses Observer of entrapment". BBC. 7 July 1998. Retrieved 29 November 2007.
- LLM Brochure
- "Jon Mendelsohn". Man in the Eye. Private Eye. 7 December 2007.
- Colin Brown (30 November 2007). "Brown aide in the frame as police are asked to investigate donations". The Independent. Retrieved 30 November 2007.
- "Staff and Trustees". Holocaust Educational Trust. Retrieved 17 June 2012.
- "NIF UK Board of Trustees". New Israel Fund. Retrieved 17 June 2012.
- The London Gazette: . 9 September 2013.
- The London Gazette: . 24 September 2013.
- Katherine Rushton (7 May 2013). "Facebook names UK's Nicola Mendelsohn as head of European arm". The Telegraph. Retrieved 27 June 2013.
- Jennifer Lipman (7 April 2011). "Advertising chief Mendelsohn: UK must beat Mad Men". Jewish Chronicle. Retrieved 20 July 2011.