Born 21 May 1891, the only child of Robert Robertson (1864-1925), of the Indian Medical Service, and his wife Flora Mackinnon. His father was ultimately a lieutenant-colonel, IMS, and senior physician to the Madras General Hospital (Crawford's *Roll of the IMS*, Madras list, No 1500). Robertson was educated at Charterhouse, and entered St Mary's Hospital Medical School in 1909. He qualified in 1914, six months before the outbreak of war. He served throughout the war in the RAMC as medical officer, 184th Brigade, RFA. He returned to St Mary's in 1919, served as house surgeon to V Warren Low and as surgical registrar, and then specialized as a laryngologist. After being surgeon in charge of the LCC's laryngological clinic, he became consulting surgeon for diseases of ear, nose, and throat at the Paddington Hospital. At St Mary's he was appointed a supernumerary assistant in the ear, nose, and throat department in 1928, an assistant surgeon in 1931, and senior surgeon in 1938, when C I Graham retired. He was also consulting surgeon to the Princess Louise Hospital for Children at Kensington and to Wembley Manor Hospital. As he was on the regular reserve of the RAMC he was recalled to active service in 1939, and was evacuated from St Nazaire after the fall of France in June 1940. During the rest of the war, till 1945, he served as an ear, nose, and throat specialist at various base hospitals at home and overseas. After a short return to civil practice he retired in 1947 and was elected consulting surgeon to St Mary's. His private practice had been at 90a Harley Street, and he now settled at Robin Hill, Itchen Abbas, near Winchester. Robertson married in 1930 L D Louise Johnson, who survived him. There were no children of the marriage. He died in the Royal Hampshire County Hospital, Winchester, on 7 August 1951, aged 60. Robertson was a popular man, of good looks and personal charm, very generally known as "Duggie".