Born in Yorkshire on 28 February 1886, he grew up at Whitby. He gained the first science scholarship to the Medical College of the London Hospital, won many prizes there, and served as demonstrator of physiology to Sir Leonard Hill. He held resident appointments at the London Hospital, and was house surgeon at the Poplar Hospital and the Royal Infirmary, Bristol. In 1914 he went on active service in France as a regimental medical officer, and was awarded the Military Cross in 1915; later he was a surgical specialist at a base hospital. When the war ended he went into general practice at Minehead, Somerset and was appointed surgeon to the Minehead Hospital. Apart from the period of the war of 1939-45, when he served in West Africa in charge of a surgical division, with the rank of Lieutenant-Colonel RAMC, he spent all his life at Minehead, where in spite of his excessive modesty he became a prominent citizen. He was President of the local Rotary Club and of the British Legion branch. He was an entertaining speaker, generous and much beloved. He practised for thirty-six years at 34 The Avenue, Minehead, and died in the Minehead and West Somerset Hospital on 25 January 1957 aged 70. Walker's physical and moral courage were outstanding. While a demonstrator of physiology, he volunteered for many experiments. Notably, he underwent deep anaesthesia to test the relative merits of different methods of resuscitation of the unconscious. Publication: Non-traumatic rupture of the apparently normal spleen. *Clinical Journal* 1945, 74, 225.