Born on 24 December 1876 the fourth child and third son of Michael Longridge CBE of Bowdon, Cheshire, President of the Institute of Mechanical Engineers 1917-19, and his wife née O'Neill, he was educated at Malvern College and at Owen's College, Manchester, and entered St George's Hospital with a science scholarship in 1897. He qualified with first-class honours at Manchester in 1900, took the doctorate in 1901, and the Fellowship in 1902, in which year he also won the William Brown exhibition at St George's. He worked for a time at Berne in Switzerland, and took the Membership of the College of Physicians in 1905. Longridge determined to practise as an obstetrician and gynaecologist, and with this purpose served as house surgeon at the Soho Square Hospital for Women and the Manchester Hospital for Children at Pendlebury. He was resident medical officer at Queen Charlotte's Hospital, and edited the *Clinical Reports* 1905-08. He then settled in practice at 24 Lansdowne Place, Cheltenham, and became obstetric surgeon to the Victoria Home and medical officer to Cheltenham Ladies College. He was an examiner for the Central Midwives Board. During the first world war he served in Egypt and France, with the rank of Captain RAMC. After the war Longridge returned to Cheltenham, but in 1925 he became resident medical officer at Lancing College, Shoreham, Sussex; in 1927 he moved into the neighbouring town of Worthing, where he practised at 19 Downview Road. He retired to Devonshire in 1933, living first near Exmouth, then at Exeter, and finally at Budleigh Salterton, where he died on 13 July 1952 after long illness. He married in 1912 Dorothy, second daughter of H A Willey of Exeter, who survived him with a son, David Longridge FRCSEd, and a daughter. Publications: A case of eclampsia, with two special details of treatment. *J Obstet Gynaec Brit Emp*. 1905, 8, 399. Fifty cases of labour complicated by organic disease of the heart, with a note on the blood pressure in pregnancy; with P Ingram. *Ibid* 1906, 10,247. *The puerperium*. London, Adlard 1906. 272 pp. *Manual for midwives*. London, Churchill 1908. 309pp.