Raymond was educated at University College School and was a student at St Bartholomew's Hospital, entering in 1906. He graduated as M.B., B.S. (Lond.) in 1912, and subsequently served as a house surgeon to the Dorset County Hospital in Dorchester, and house physician to the Royal Free Hospital. Raymond gained a temporary commission in the R.A.M.C. at the rank of Lieutenant on 8th December 1915. He served as the medical officer to the 2nd Bn. Royal Scots Regiment, then went to Mesopotamia with the 32nd General Hospital, but returned to France in 1917 being promoted to the rank of temporary Captain on 1st May 1917. He was awarded the Military Cross "For conspicuous gallantry and devotion to duty. He searched for a missing stretcher-bearer for two hours under heavy shell fire, at last finding him in a shell-hole and assisting to carry him back. Throughout nine days' fighting he was constantly going forward under fire, searching for, and bringing in, wounded." Raymond was attached to the 7th Field Ambulance at the time of his death, which resulted from a shell wound. He was the son of Charles H Brewitt-Taylor, Commissioner of Customs, China, and Alice Mary Brewitt Taylor; and the husband of Evelyn Brewitt-Taylor of Inglefield, Little Heath, Potters Bar, Middlesex.