Born at Birmingham on 15 September 1884, second son of Walter John Lloyd, manufacturer, and his wife, née Bolton. He was educated there at King Edward's School and at the University, of which he was an exhibitioner. He took his clinical training at the London Hospital, and graduated in medicine and surgery at London University in 1909, with honours in anatomy and pharmacology; he had taken the Conjoint qualification the previous year, and took the Fellowship in 1911. After serving as house surgeon at the Hospital for Sick Children in Great Ormond Street and resident medical officer at Charing Cross Hospital, he went back to Birmingham as senior resident medical officer at Queen's Hospital. He was elected surgeon to the United Hospitals and the Birmingham and Midlands Hospital for Sick Children, in 1913, and was appointed consulting surgeon to each when he retired. He was also consulting surgeon to the Smallwood Hospital, Redditch. During the first world war he served from 1915 to 1919 at the 1st Southern General Hospital with the rank of captain, RAMC. Lloyd was appointed professor of forensic medicine at Birmingham University in 1932, a post which he held for ten years, resigning in 1942 after an illness the previous year, and was elected emeritus professor. He was a member of the Midlands Medical Society and the Medico-legal Society, and was president of the Birmingham University Graduates' Club in 1935 and the Birmingham University Medical Society in 1936. He was admitted to the degree of ChM by Birmingham University in 1933. Lloyd married in 1930 Hilda Nora Shufflebotham, FRCS, afterwards professor of obstetrics and gynaecology at Birmingham, senior surgeon to the Birmingham Hospital for Women, president of the RCOG, and a DBE; she survived him, but without children. He died suddenly on 22 January 1948 at 40 Harborne Road, Edgbaston. He had also had a country house at Spadesbourne, Mearse Lane, Barnt Green, Worcester. He left the remainder of his fortune, after termination of his wife's life interest, half to the Royal College of Surgeons and half to the Cavendish Laboratory, Cambridge. Lloyd was a man of wide intellectual curiosity. He was fond of travel and mountaineering, and had a knowledge of many European countries and their languages; he also studied oriental scripts. He was a sound mathematician and a fine pianist. In character he was simple and modest, with a distaste for public appearance whether in person or in print.