The title Surgeon-General has been used for different purposes at different times in the United Kingdom. Initially it was the designation of a director of the Army's medical services. Subsequently it was a senior rank in the Army Medical Department (and, briefly, in the Royal Navy). Having lapsed after the First World War, the title was again revived in the late 20th century for the most senior uniformed medical officer in the British Armed Forces. Currently, it pertains to a senior uniformed medical officer, working under the Director General Defence Medical Services.

In July 1911, the titles of inspector-general of hospitals and fleets and deputy inspector-general of hospitals and fleets were replaced by surgeon-general, Royal Navy, and deputy surgeon-general, Royal Navy, respectively.^[4]

In November 1918, the titles of officers of the medical, accountant and naval instructor branches of the Navy were revised "in order to indicate more clearly their status as Officers of [His] Majesty's Naval Service"; thenceforward surgeons-general were styled surgeon rear-admirals and deputy surgeons-general were styled surgeon captains.^[5]

In 1985, as part of a move toward greater co-ordination between the medical departments of the three Armed Services, the post of Surgeon General was created anew for the most senior uniformed medical officer in the British Armed Forces (the first holder being Sir Cameron Moffat, who served concurrently as Director General Army Medical Services).^[6]

Latterly, the role was described as "professional head of Defence Medical Services and the Defence Authority for end to end Defence healthcare and medical operational capability".^[7] It had always been held by a three-star military medical officer;^[8] but in July 2019 a civilian was appointed to the role for the first time, Peter Homa, whose job title was Director General Defence Medical Services (DGDMS).^[9] Under Peter Homa as DGDMS, Air Vice-Marshal Alastair Reid (who had been appointed to the two-star position of Defence Medical Director in 2018) was designated Surgeon-General.^[10]

Subsequently, a serving military medical officer, Air Marshal Clare Walton, has been appointed to the three-star post of Director General Defence Medical Services; but the title Surgeon General has remained attached to the two-star position.^[11]

As of 2024, the responsibilities of the DGDMS include:^[12]

• being the functional lead for medical and healthcare within the Ministry of Defence
• leading the transformation of the Defence Medical Services
• ensuring all UK Armed Forces personnel receive safe, efficient and effective healthcare.

The responsibilities of the Surgeon General include:^[13]

• maximising the number of service personnel fit for task through securing appropriate levels of health; optimising the health and healthcare of deployed population at risk throughout the operational patient care pathway.
• the senior technical authority for defence medicine, including prevention, detection, treatment, and recovery from the full spectrum of illness and injury.
• strategic advice on defence medical doctrine, concepts, capability planning, force development and lessons.
• directing medical research and medical innovation in Defence, the co-ordination of strategic DMS defence engagement and directing continuous clinical quality improvement in defence.

For Directors General Defence Medical Services, see Defence Medical Services#List of Directors General since 2019