Jonathan Powell (civil servant)

Jonathan Powell
Powell in 2011
United Kingdom National Security Adviser
Assumed office
2 December 2024
Prime MinisterKeir Starmer
Preceded byTim Barrow
Downing Street Chief of Staff
In office
2 May 1997  27 June 2007
Prime MinisterTony Blair
Preceded byDavid Wolfson (1985)
Succeeded byTom Scholar
Chief of Staff to the Leader of the Opposition
In office
1995  2 May 1997
LeaderTony Blair
Succeeded bySebastian Coe
Personal details
Born (1956-08-14) 14 August 1956
NationalityBritish
SpouseSarah Helm
Children4
Alma materUniversity College, Oxford
University of Pennsylvania

Jonathan Nicholas Powell (born 14 August 1956) is a British civil servant and diplomat who has served as the UK National Security Advisor (NSA) under Keir Starmer since 2024. He previously served as Downing Street Chief of Staff from 1997 to 2007 under Tony Blair. During this period Powell was also the chief British negotiator in the Northern Ireland peace process.

In 2007, Powell joined Morgan Stanley as a full-time senior managing director of its investment banking division. He runs the charity Inter Mediate, which works on armed conflicts around the world. In 2014, David Cameron appointed Powell to be the UK's special envoy to Libya.

In 2024, UK Prime Minister Sir Keir Starmer appointed Powell as a special envoy to resolve the Chagos Archipelago sovereignty dispute. Following the resolution of the dispute with the UK giving up all claims on the archipelago, he was appointed by Prime Minister Starmer to serve as the UK National Security Adviser.