Admiral of the Fleet Sir Roger Roland Charles Backhouse, was a Royal Navy officer. He served in the First World War as a cruiser commander and after the war became a battle squadron commander and later Commander-in-Chief, Home Fleet. Becoming First Sea Lord in November 1938, his major contribution in that role was to abandon the official British policy of sending a major fleet to Singapore to deter Japanese aggression, realising the immediate threat was closer to home and that such a policy was no longer viable. He died from a brain tumour in July 1939 just before the outbreak of the Second World War.
Admiral Sir John David Luce, was a Royal Navy officer. He fought in the Second World War as a submarine commander before taking part in the Dieppe Raid and becoming Chief Staff Officer to the Naval Forces for the Normandy landings. He also commanded a cruiser during the Korean War. He served as First Sea Lord and Chief of the Naval Staff in the mid-1960s and in that role resigned from the Royal Navy along with Navy Minister Christopher Mayhew in March 1966 in protest over the decision by the Labour Secretary of State for Defence, Denis Healey, to cancel the CVA-01 aircraft carrier programme.
Admiral of the Fleet Sir Arthur John Power, was a Royal Navy officer. He took part in the First World War as a gunnery officer and saw action in the Dardanelles campaign. During the inter-war years he commanded the gunnery school at HMS Excellent and then the aircraft carrier HMS Ark Royal. During the Second World War he played a leading role in the planning for the Allied invasion of Sicily and for the Allied invasion of Italy and then commanded the naval forces for the actual landing of V Corps at Taranto in Italy in September 1943. He went on to be Commander-in-Chief of the East Indies Fleet in the closing stages of the war and conducted naval strikes on the Imperial Japanese Army in Borneo and Malaya. After the War he became Second Sea Lord and Chief of Naval Personnel, Commander-in-Chief, Mediterranean Fleet and then Commander-in-Chief, Portsmouth.
John Morley Holford, CB, OBE was a medical officer in the Royal Navy.
Admiral Sir Eric John Arthur Fullerton, KCB, DSO was a Royal Navy officer.
Surgeon Vice Admiral Ian Lawrence Jenkins was a Royal Navy medical officer and former Surgeon General of the British Armed Forces.
Admiral Sir Richard Webb was a British Royal Navy officer.
The Royal Navy Medical Service is the branch of the Royal Navy responsible for medical care. It works closely with Queen Alexandra's Royal Naval Nursing Service.
Admiral Sir Charles Thomas Mark Pizey was a Royal Navy officer who served as the last Commander-in-Chief and first Chief of Naval Staff of the Indian Navy from 1951 to 1955.
Admiral Sir Bertram Sackville Thesiger was a Royal Navy officer who went on to be Commander-in-Chief, East Indies Station.
Inspector-General of Hospitals and Fleets Sir John Denis Macdonald was a naval surgeon.
Vice Admiral Sir Richard Jeffrey Ibbotson, is a former Royal Navy officer who served as Deputy Commander-in-Chief Fleet.
Surgeon Rear Admiral Lionel John Jarvis, CBE, KStJ, QHS, FRCR, DL is a British consultant radiologist. He was previously the Surgeon General of the Royal Navy and the Assistant Chief of the Defence Staff for Health. He served as the Royal Navy's Chief Medical Officer and Medical Director General (Naval) until April 2012. He was appointed as an Honorary Surgeon to the Queen (QHS) in 2006. He was both the Prior of England and the Islands of the Most Venerable Order of the Hospital of Saint John of Jerusalem and the Chair of St John Ambulance from 2016 to 2021.
Rear-Admiral Sir Alexander Henry Charles Gordon-Lennox was a Royal Navy officer who became President of the Royal Naval College, Greenwich.
Rear Admiral Sir Richard Hugh Loraine Bevan, was a British Royal Navy officer of the First World War and inter-war period.
Surgeon Vice-Admiral Alasdair James Walker, was a British medical doctor and senior Royal Navy officer. He served as Surgeon-General of the British Armed Forces.
Admiral Sir Timothy Peter Fraser, is a retired senior Royal Navy officer who served as Vice-Chief of the Defence Staff from May 2019 to August 2022.
Rear Admiral James Humphrey Walwyn was a British officer in the Royal Navy who served during the Second World War.
Vice Admiral Sir Hugh Martell, was a Royal Navy officer who served as Admiral Commanding, Reserves. He is best known for his part as commander of Task Force 308 in Operation Mosaic, the series of British nuclear tests in the Monte Bello Islands in Western Australia in 1956.
Surgeon Rear Admiral Arnold Ashworth Pomfret was an English first-class cricketer, ophthalmologist and Royal Navy officer.
United Kingdom 
Royal Navy