Change of British High Commissioner to Tonga: Keith McMahon

25.3.2026

  | Her Majesty's Revenue and Customs

 Mr Keith McMahon MBE has been appointed British High Commissioner to the Kingdom of Tonga in succession to Mr Philip Malone LVO, who will be transferring to another Diplomatic Service appointment. 


Mr Keith McMahon MBE has been appointed British High Commissioner to the Kingdom of Tonga in succession to Mr Philip Malone LVO, who will be transferring to another Diplomatic Service appointment. Mr McMahon will take up his appointment during June 2026.

Curriculum Vitae
Full name: Keith David McMahon




Year
Role




2022 to present
Accra, Deputy High Commissioner


2022
Tashkent, First Secretary Political


2019 to 2021
Khartoum, Deputy Ambassador


2016 to 2019
FCO, Deputy Director Financer


2014 to 2016
Washington, Chevron Corporation, Head of Corporate Affairs (on special unpaid leave from FCO)


2008 to 2014
Washington, First Secretary, Corporate Services


2007 to 2008
FCO, Finance Directorate, Corporate Transformation


2003 to 2007
Athens, First Secretary, Corporate Services


1999 to 2003
FCO, Desk Officer, Democratic Republic of Congo, Rwanda and Burundi


1998 to 1999
FCO, Desk Officer, China


1998
Paris, Third Secretary Consular


1995 to 1998
Yerevan, Deputy Ambassador


1992 to 1995
FCO, Worldwide Floater


1990 to 1992
Lusaka, Third Secretary Management


1988 to 1990
FCO, Finance Department


1988
Joined FCO



https://www.gov.uk/government/news/change-of-british-high-commissioner-to-tonga-keith-mcmahon