Peter Mandelson

The Lord Mandelson
Mandelson in 2025
British Ambassador to the United States
Assumed office
10 February 2025
MonarchCharles III
PresidentDonald Trump
Prime MinisterSir Keir Starmer
Preceded byDame Karen Pierce
First Secretary of State
In office
5 June 2009  11 May 2010
Prime MinisterGordon Brown
Preceded byJohn Prescott
Succeeded byWilliam Hague
Lord President of the Council
In office
5 June 2009  11 May 2010
Prime MinisterGordon Brown
Preceded byBaroness Royall of Blaisdon
Succeeded bySir Nick Clegg
Secretary of State
for Business, Innovation and Skills

President of the Board of Trade
In office
3 October 2008  11 May 2010
Prime MinisterGordon Brown
Preceded byJohn Hutton
Succeeded byVince Cable
In office
27 July 1998  23 December 1998
Prime MinisterTony Blair
Preceded byMargaret Beckett
Succeeded byStephen Byers
European Commissioner for Trade
In office
22 November 2004  3 October 2008
PresidentJosé Manuel Barroso
Preceded byPascal Lamy
Succeeded byCatherine Ashton
Secretary of State for Northern Ireland
In office
11 October 1999  24 January 2001
Prime MinisterTony Blair
Preceded byMo Mowlam
Succeeded byJohn Reid
Minister without Portfolio
In office
2 May 1997  27 July 1998
Prime MinisterTony Blair
Preceded byBrian Mawhinney
Succeeded byCharles Clarke
Member of the House of Lords
Lord Temporal
Assumed office
13 October 2008
Life Peer
Member of Parliament
for Hartlepool
In office
9 April 1992  8 September 2004
Preceded byTed Leadbitter
Succeeded byIain Wright
Personal details
Born
Peter Benjamin Mandelson

(1953-10-21) 21 October 1953
Hendon, Middlesex, England
Political partyLabour
Spouse
dom Reinaldo Avila da Silva
(m. 2023)
RelativesLord Morrison of Lambeth (grandfather)
EducationHendon County Grammar School
Alma materSt Catherine's College, Oxford
Signature
NicknamePrince of Darkness

Peter Benjamin Mandelson, Baron Mandelson, PC (born 21 October 1953) is a British politician, lobbyist and diplomat who has served as British Ambassador to the United States since February 2025.

A member of the Labour Party, Mandelson served as Labour's director of communications from 1985 to 1990, becoming one of the first people to whom the term "spin doctor" was applied and being dubbed the "Prince of Darkness" because of his "ruthless" and "media savvy" reputation.

Mandelson served as Secretary of State for Business, Innovation and Skills and President of the Board of Trade in 1998 and again from 2008 to 2010, Secretary of State for Northern Ireland from 1999 to 2001 as well as First Secretary of State and Lord President of the Council from 2009 to 2010. He was the European Commissioner for Trade from 2004 to 2008 and Member of Parliament (MP) for Hartlepool from 1992 to 2004, before being elevated to the House of Lords as a Life Peer in 2008. In November 2010, he co-founded Global Counsel, a lobbying firm based in London.

Mandelson has been described as having a "significant influence" on the office of current Labour Party Leader and Prime Minister Keir Starmer as a "core part" of his political network. In December 2024, Starmer nominated Mandelson as HM Ambassador to the United States.