Chief of the Air Staff (United Kingdom)

Last updated

Chief of the Air Staff
UK-Air-OF9-Flag.svg
Air Chief Marshal Harv Smyth 2025.jpg
Incumbent
Air Chief Marshal Harvey Smyth
since 29 August 2025
Ministry of Defence
Royal Air Force
Style Air Chief Marshal
AbbreviationCAS
Member of Defence Council
Air Force Board
Chiefs of Staff Committee
Reports to Chief of the Defence Staff
Nominator Secretary of State for Defence
Appointer Prime Minister
Subject to formal approval by the King-in-Council [1]
Term length 3 Years
Formation3 January 1918
First holderMajor General Sir Hugh Trenchard
Deputy Deputy Chief of the Air Staff
Website Official website

Chief of the Air Staff (CAS) is the title of the professional head of the Royal Air Force, who is a member of both the Chiefs of Staff Committee and the Air Force Board. The post was created in 1918, with Major General Sir Hugh Trenchard as the first holder. The current and 32nd Chief of the Air Staff is Air Chief Marshal Harvey Smyth, who succeeded Sir Richard Knighton on 29 August 2025. [2]

Contents

Responsibilities

As of June 2023, the responsibilities were described as follows: As the RAF progressively adopts responsibility for Air Capability planning and management from MOD Head Office, CAS will be responsible for commissioning RAF equipment, materiel and other support requirements. As a Service Chief of Staff, he has the right of direct access to the Secretary of State and the Prime Minister. CAS chairs the Air Force Board Standing Committee, and is a member of the Defence Council, the Air Force Board, the Armed Forces Committee, the Chiefs' of Staff Committee and the Senior Appointments Committee. Current responsibilities for CAS include:

History

The post of Chief of the Air Staff (CAS) was established in January 1918, just prior to the official formation of the Royal Air Force (RAF), and its first occupant was Major General Sir Hugh Trenchard. Following Trenchard's resignation in March 1918 after disagreements with the first air minister, Lord Rothermere, his rival Major General Sir Frederick Sykes was appointed. For political reasons Trenchard's resignation did not take effect until late April in order that he would be CAS when the RAF was formed. With Winston Churchill's post-war appointment as Secretary of State for War and Air, Sykes was moved sideways to head up the nascent Civil Aviation ministry and Trenchard returned as CAS. In the early 1920s, Trenchard had to fight to keep the RAF from being divided and absorbed back into the Royal Navy and the British Army. After Lord Trenchard retired in 1930 there were still suggestions that the RAF should be broken up, but Trenchard's foundations proved solid. [4]

By the time the Second World War broke out in 1939, the then occupant of the post, Air Chief Marshal Sir Cyril Newall, had a service that had been undergoing the most rapid of expansions during the British rearmament programs of the late 1930s. Newall gave way in 1940 to Air Chief Marshal Sir Charles Portal, who led the service for the rest of the war. Portal was a tireless defender of the RAF and highly capable in administration and strategy. Postwar the RAF was reoriented to perform the dual roles of defending the shrinking British Empire and possibly fighting against the Soviet Union in a Warsaw Pact verses NATO war over Germany and the United Kingdom. The Chiefs of the Air Staff of the day had to fight a constant battle to keep the British aircraft industry alive. In the end only minimal success was achieved, with only a rump aviation industrial base left by the 1970s. [5]

The first eight Chiefs of the Air Staff were originally commissioned in the British Army, with four coming from the infantry, two from the artillery and one each from the cavalry and the engineers. Of these both Lord Trenchard and Sir John Salmond each held the post over two separate periods. By the early mid-1950s sufficient time had elapsed for officers originally commissioned in the British air services of the First World War to have risen through the ranks to RAF's senior post; Sir John Slessor had originally served in the Royal Flying Corps while Sir William Dickson was commissioned into the Royal Naval Air Service. In 1956 Sir Dermot Boyle became the first CAS to have originally been commissioned in the RAF. [6]

Until 2023, every occupant of the post originally commissioned in the RAF was a qualified pilot. The first non-pilot to be appointed to the role is Sir Richard Knighton, who joined the RAF as an engineer, [7] [8] and who took up post in June 2023. [9]

Professional heads of the English/British Armed Forces
Royal Navy British Army Royal Air Force Combined
1645N/A Commander-in-Chief of the Forces (1645/60–1904, intermittently)Not established
1689 Senior Naval Lord (1689–1771)
1771First Naval Lord (1771–1904)
1904 First Sea Lord (1904–1917) Chief of the General Staff (1904–1909)Inter-service co-ordination was carried out from 1904 by the Committee of Imperial Defence under the chairmanship of the Prime Minister
1909Chief of the Imperial General Staff (1909–1964)
1917First Sea Lord and Chief of the Naval Staff (1917–present)
1918 Chief of the Air Staff (1918–present)
1923Chairman of the Chiefs of Staff Committee (1923–1959, held by one of the service heads until 1956)
1959 Chief of the Defence Staff (1959–present)
1964Chief of the General Staff (1964–present)

Appointees

The following list gives details of the chiefs of the air staff from 1918 to the present:

No.PortraitNameTook officeLeft officeTime in officeFlying specialism or armRef.
1
Major General Sir Hugh Trenchard.jpg
Trenchard, Hugh Major-General
Sir Hugh Trenchard
(1873–1956)
3 January 191813 April 1918100 daysInfantry
(Royal Scots Fusiliers)
[10]
2
Maj Gen Frederick Sykes.jpg
Sykes, FrederickMajor-General
Sir Frederick Sykes
(1877–1954)
13 April 191831 March 1919352 daysCavalry
(15th Hussars)
[11]
(1)
Sir Hugh Trenchard (cropped).jpg
Trenchard, Hugh Marshal of the Royal Air Force
Sir Hugh Trenchard
(1873–1956)
31 March 19191 January 193010 years, 276 daysInfantry
(Royal Scots Fusiliers)
[12]
3
Sir John Salmond in 1925.jpg
Salmond, JohnAir Chief Marshal
Sir John Salmond
(1881–1968)
1 January 19301 April 19333 years, 90 daysInfantry
(King's Own (Royal Lancaster Regiment))
[13]
4
Sir Geoffrey Salmond.jpg
Salmond, GeoffreyAir Chief Marshal
Sir Geoffrey Salmond
(1878–1933)
1 April 193327 April 1933 26 daysArtillery
(Royal Artillery)
[14]
-
Sir John Salmond in 1925.jpg
Salmond, JohnMarshal of the Royal Air Force
Sir John Salmond
(1881–1968)
Acting
28 April 193322 May 193324 daysInfantry
(King's Own (Royal Lancaster Regiment))
[15]
5
Marshal of the RAF Sir Edward Ellington.jpg
Ellington, EdwardMarshal of the Royal Air Force
Sir Edward Ellington
(1877–1967)
22 May 19331 September 19374 years, 102 daysArtillery (Royal Field Artillery) [16]
6
Air Chief Marshal Sir Cyril Newall (close-up).jpg
Newall, CyrilMarshal of the Royal Air Force
Sir Cyril Newall
(1886–1963)
1 September 193725 October 19403 years, 54 daysInfantry
(Royal Warwickshire Regiment and 2nd Gurkha Rifles)
[17]
7
Air Chief Marshal Sir Charles Portal, Kcb, Dso, Mc, Chief of Air Staff 1940-1945 TR3.jpg
Portal, CharlesMarshal of the Royal Air Force
Charles Portal, 1st Viscount Portal of Hungerford
(1893–1971)
25 October 19401 January 19465 years, 68 daysEngineers
(Royal Engineers)
[18]
8
Tedder1943 detail.jpg
Tedder, ArthurMarshal of the Royal Air Force
Arthur Tedder, 1st Baron Tedder
(1890–1967)
1 January 19461 January 19504 years, 0 daysInfantry
(Dorset Regiment)
[19]
9
Air Marshal Sir John Slessor.jpg
Slessor, JohnMarshal of the Royal Air Force
John Slessor
(1897–1979)
1 January 19501 January 19533 years, 0 daysFighters (biplanes) [20]
10
Air Vice-Marshal Dickson near Venafro, Italy (cropped).jpg
Dickson, WilliamMarshal of the Royal Air Force
Sir William Dickson
(1898–1987)
1 January 19531 January 19563 years, 0 daysNaval aviation (biplanes) [21]
11
Dermot Boyle.jpg
Boyle, DermotMarshal of the Royal Air Force
Sir Dermot Boyle
(1904–1993)
1 January 19561 January 19604 years, 0 daysFighters (biplanes) [22]
12
Air Marshal Sir Thomas Pike.jpg
Pike, ThomasMarshal of the Royal Air Force
Sir Thomas Pike
(1906–1983)
1 January 19601 September 19633 years, 243 daysFighters (biplanes) [23]
13
Sir Charles Elworthy.jpg
Elworthy, CharlesAir Chief Marshal
Sir Charles Elworthy
(1911–1993)
1 September 19631 April 19673 years, 212 daysBombers (biplanes) [24]
14
No image.png
Grandy, JohnAir Chief Marshal
Sir John Grandy
(1913–2004)
1 April 19671 April 19714 years, 0 daysFighters (biplanes) [25]
15
No image.png
Spotswood, DenisAir Chief Marshal
Sir Denis Spotswood
(1916–2001)
1 April 19711 April 19743 years, 0 daysMultirole (monoplane) [26]
16
Wg Cdr Humphrey after the 1953 flight from Cape Town (cropped).jpg
Humphrey, AndrewAir Chief Marshal
Sir Andrew Humphrey
(1921–1977)
1 April 19747 August 19762 years, 159 daysFighters (monoplane) [27]
17
No image.png
Cameron, NeilMarshal of the Royal Air Force
Sir Neil Cameron
(1920–1985)
7 August 197610 August 1977337 daysFighters (monoplane) [28]
18
Flt Lt M Beetham.jpg
Beetham, MichaelAir Chief Marshal
Sir Michael Beetham
(1923–2015)
10 August 197715 October 19825 years, 66 daysBombers (monoplane) [29]
19
No image.png
Williamson, KeithAir Chief Marshal
Sir Keith Williamson
(1928–2018)
15 October 198215 October 19853 years, 0 daysFighters (fast jet) [30]
20
Official portrait of Lord Craig of Radley crop 2.jpg
Craig, DavidAir Chief Marshal
Sir David Craig
(born 1929)
15 October 198514 November 19883 years, 30 daysFighters (fast jet) [31]
21
Les Aspin with Air Marshal Sir Peter Harding (cropped).jpg
Harding, PeterAir Chief Marshal
Sir Peter Harding
(1933–2021)
14 November 19886 November 19923 years, 358 daysBombers (fast jet) [32]
22
Blank.png
Graydon, MichaelAir Chief Marshal
Sir Michael Graydon
(born 1938)
6 November 199210 April 19974 years, 155 daysFighters (fast jet) [33]
23
Sir Richard Johns (cropped).jpg
Johns, RichardAir Chief Marshal
Sir Richard Johns
(born 1939)
10 April 199721 April 20003 years, 11 daysFighters (fast jet) [34]
24
Blank.png
Squire, PeterAir Chief Marshal
Sir Peter Squire
(1945–2018)
21 April 20001 August 20033 years, 102 daysFighters (fast jet) [35]
25
Stirrup in Istanbul.jpg
Stirrup, JockAir Chief Marshal
Sir Jock Stirrup
(born 1949)
1 August 200313 April 20062 years, 255 daysGround attack/
reconnaissance (fast jet)
[36]
26
Sir Glen Torpy at the Global Air Chiefs Conference (crop).jpg
Torpy, GlennAir Chief Marshal
Sir Glenn Torpy
(born 1953)
13 April 200631 July 20093 years, 109 daysGround attack (fast jet) [37]
27
Sir Stephen Dalton in Afghanistan.jpg
Dalton, StephenAir Chief Marshal
Sir Stephen Dalton
(born 1954)
31 July 200931 July 20134 years, 0 daysGround attack (fast jet) [38]
28
Sir Andrew Pulford.jpg
Pulford, AndrewAir Chief Marshal
Sir Andrew Pulford
(born 1958)
31 July 201311 July 20162 years, 346 daysHelicopters [39]
29
Air Marshal Stephen Hillier.jpg
Hillier, StephenAir Chief Marshal
Sir Stephen Hillier
(born 1962)
11 July 201626 July 20193 years, 15 daysGround attack (fast jet) [40]
30
Air Chief Marshal Mike Wigston CBE.jpg
Wigston, MichaelAir Chief Marshal
Sir Michael Wigston
(born 1968)
26 July 20192 June 20233 years, 311 daysGround attack (fast jet) [41]
31
Sir Richard Knighton.jpg
Knighton, RichardAir Chief Marshal
Sir Richard Knighton
(born 1969)
2 June 202329 August 20252 years, 88 daysEngineer (aeronautical) [42]
32
Air Chief Marshal Harv Smyth 2025.jpg
Smyth, HarveyAir Chief Marshal
Harvey Smyth
29 August 2025Incumbent0 daysGround attack (fast jet) [43]
  1. ^ The ranks and titles shown are the highest that the officer in question attained during his tour as Chief of the Air Staff. However, in the case where the officer was promoted on the day before he was posted or retired, then the lower rank is shown.

See also

Other service chiefs

Generally relevant

References

  1. Departmental Resource Accounts 2006-7 Ministry of Defence
  2. "Chief of the Air Staff". Royal Air Force. Retrieved 29 August 2025.
  3. "Air Chief Marshal Sir Richard Knighton KCB FREng". GOV.UK. Retrieved 25 June 2023. Open Government Licence logo.svg Text was copied from this source, which is available under an Open Government Licence v3.0. © Crown copyright.
  4. Meilinger, Phillip S. (2004). "Sir John Salmond" . Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/35915 . Retrieved 2 August 2012.(Subscription, Wikipedia Library access or UK public library membership required.)
  5. "Meeting our makers: Britain's long industrial decline". New Statesman. 24 January 2013. Retrieved 1 October 2014.
  6. Probert, Henry A. (2004). "Sir Dermot Alexander Boyle" . Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/51502 . Retrieved 14 July 2012.(Subscription, Wikipedia Library access or UK public library membership required.)
  7. Haynes, Deborah (29 March 2023). "RAF set to name non-pilot as chief for the first time in its history". Sky News. Retrieved 31 March 2023.
  8. "Air Marshal Sir Richard Knighton appointed new Chief of the Air Staff". Royal Air Force. 31 March 2023. Retrieved 31 March 2023.
  9. "Air Marshal Sir Richard Knighton appointed new Chief of the Air Staff". GOV.UK.
  10. Barrass, Malcolm (9 October 2007). "Marshal of the RAF The Viscount Trenchard of Wolfeton". Air of Authority - A History of RAF Organisation. Retrieved 25 May 2009.
  11. "Air Vice Marshal Sir Frederick Sykes". Air of Authority - A History of RAF Organisation. Retrieved 5 August 2012.
  12. "No. 31348". The London Gazette . 20 May 1919. p. 6249.
  13. "No. 33565". The London Gazette. 31 December 1929. p. 8506.
  14. "No. 33926". The London Gazette (Supplement). 31 March 1933. p. 2194.
  15. "No. 33936". The London Gazette. 2 May 1933. p. 2940.
  16. "No. 33942". The London Gazette. 23 May 1933. p. 3457.
  17. "No. 34432". The London Gazette. 3 September 1937. p. 5561.
  18. "No. 34989". The London Gazette (Supplement). 12 November 1940. p. 6492.
  19. "Marshal of the Royal Air Force Lord Tedder". Air of Authority: A History of RAF Organisation. Retrieved 22 July 2012.
  20. "No. 38795". The London Gazette (Supplement). 30 December 1949. p. 6168.
  21. "No. 39739". The London Gazette (Supplement). 30 December 1952. p. 56.
  22. "No. 40666". The London Gazette (Supplement). 27 December 1955. p. 7307.
  23. "No. 41664". The London Gazette (Supplement). 20 March 1959. p. 1979.
  24. "No. 42924". The London Gazette (Supplement). 15 February 1963. p. 1615.
  25. "No. 44281". The London Gazette (Supplement). 31 March 1967. p. 3691.
  26. "No. 45337". The London Gazette (Supplement). 5 April 1971. p. 3340.
  27. "No. 46252". The London Gazette (Supplement). 1 April 1974. p. 4287.
  28. "No. 46984". The London Gazette (Supplement). 10 August 1976. p. 10916.
  29. "No. 47289". The London Gazette (Supplement). 1 August 1977. p. 9978.
  30. "No. 49156". The London Gazette (Supplement). 1 November 1982. p. 14275.
  31. "No. 50279". The London Gazette (Supplement). 7 October 1985. p. 13878.
  32. "No. 51543". The London Gazette (Supplement). 28 November 1988. p. 13394.
  33. "Sir Michael Graydon". Debretts People of Today. Archived from the original on 10 November 2014. Retrieved 1 October 2014.
  34. "Sir Richard Johns". Debretts People of Today. Archived from the original on 10 November 2014. Retrieved 1 October 2014.
  35. Who's Who 2010, A & C Black, 2010, ISBN   978-1-4081-1414-8
  36. "Sir Jock Stirrup". NATO. Retrieved 20 May 2012.
  37. "No. 57965". The London Gazette (Supplement). 25 April 2006. p. 5686.
  38. "Air Rank Appointments List 07/08 dated 16 October 2008". Ministry of Defence. Archived from the original on 4 April 2012. Retrieved 26 May 2012.
  39. "No. 60575". The London Gazette (Supplement). 23 July 2013. p. 14490.
  40. "No. 61656". The London Gazette (Supplement). 26 July 2016. p. 16088.
  41. "A 'generation of innovators' has been appointed to run the military in a shake-up of the top ranks of the Army, Navy and RAF" . The Daily Telegraph. 3 December 2018. Archived from the original on 12 January 2022. Retrieved 3 December 2018.
  42. Haynes, Deborah (29 March 2023). "RAF set to name non-pilot as chief for the first time in its history". Sky News. Retrieved 31 March 2023.
  43. "Lurgan: Harv Smyth to become next head of Royal Air Force". BBC News. 16 July 2025. Retrieved 29 August 2025.