On 15 September 1983, Messenger was appointed an acting lieutenant on a short career graduate commission, (with seniority from 1 September 1982),[3] transferring to a full career commission on 21 May 1986 with seniority from 1 September 1984.[4] At this time he also qualified as a Mountain Leader.[5] In 1995 he graduated from the Canadian Forces Command and Staff Course No 21.[6] He was promoted substantive major on 30 June 1997, having previously held the rank locally.[7]
Messenger served with British forces in the former Yugoslavia in 2000 (Kosovo), for which he was appointed Officer of the Order of the British Empire (OBE).[8] In 2001 he took command of 40 Commando.[9] He was promoted substantive colonel on 30 June 2002, having previously held the rank on an acting basis.[10][11] For his leadership of 40 Commando (and attached army units) in Iraq, including the initial assault on Al Faw peninsular, and an action against Iraqi armour at Abu Al Khasib, he was appointed a Companion of the Distinguished Service Order (DSO) on 31 October 2003.[12][13] After a sabbatical in Geneva, he joined the Joint Force Headquarters as Chief of Staff in July 2004, a job that saw him on various operations worldwide, including Operation Garron, the 2004 tsunami relief effort, Operation Highbrow, the Lebanon evacuation operation, and a six-month tour in command of the Operation Herrick preliminary operation in Afghanistan.[5][14] He graduated from the UK Higher Command and Staff Course in 2007 and was promoted brigadier on 24 April 2007.[15] On 1 April 2008 he was appointed an aide-de-camp to the Queen.[16]
On 1 December 2015, Messenger appeared in front of the Defence Select Committee of the House of Commons in relation to the military situation in Syria.[25] On 15 March 2016, he was in South Korea to observe British troops participating in Operation Key Resolve.[26] Messenger handed over his role of Deputy Chief of the Defence Staff (Operations) to Lieutenant General Mark Carleton-Smith on 18 April 2016.[27] He was appointed as Vice Chief of the Defence Staff in spring 2016, in succession to Air Chief Marshal Stuart Peach. Messenger was formally promoted to full general on 16 May 2016.[28] He is the first four-star Royal Marine general since 1977.[29][30]
Messenger retired from the Royal Marines in May 2019.[35] On 6 December 2021 Messenger was appointed Rear-Admiral of the United Kingdom, the first time that a Royal Marine has held the role.[36]
In April 2022, it was announced that he had been appointed Constable of the Tower of London. He took up the post on 1 August 2022, and is the first Royal Marine to hold the post.[37] On 5 October 2022, he was officially installed as the 161st Constable of the Tower during a service at the Tower of London.[38]
Messenger was appointed in October 2021 to lead a review of leadership in the English NHS. The review considered the "pay and incentives" offered to the service's most senior figures, as well as the "effective systems for intervention and recovery in both providers and integrated care systems", and was to report by May 2022.[41] The King's Fund produced a timeline of recent major NHS reviews, most of which had little impact.[42]Sajid Javid welcomed the report saying: "The findings in this report are stark, it shows examples of great leadership but also where we need to urgently improve,"[43] but according to the Health Service Journal it was full of well-meaning and often well-judged sentiments – but the recommendations were either peripheral or so vague as to be virtually worthless with the only significant recommendation being the introduction of a single set of "core leadership and management standards". It also overlapped with the review of the application of the Fit-and-proper-person test to the NHS.[44]The Daily Telegraph said the review addressed “none of the issues that affect the great majority of people, or at least not directly”, and that it also contained contradictory positions on diversity, inclusion and bullying.[45] it was also pointed out that – by any reasonable definition – the NHS has “far too few managers” with low spending on administration and planning compared to other healthcare systems.[46]
Family
Messenger is married to Sarah and they have three children. He enjoys running, rugby, rock climbing, golf, gardening and real ale.[5][9]
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