[1][2] He gained an entrance scholarship to Trinity College, Cambridge in 1893, where he studied physiology and obtained a first class in both parts of the natural science tripos in 1895 and 1896 and was awarded a BA Cantab in 1896.

[4] He was elected to a British Medical Association research fellowship in 1902 and received the Horton Smith pricze for his MD thesis in 1904.

[2] In 1907, he joined the staff of the Lister Institute of Preventive Medicine as a Jenner memorial student and then took a post as assistant bacteriologist.

[3] During the first world war he served as a Royal Army Medical Corps captain, initially at Newcastle Military Hospital, and subsequently at Millbank, where he researched the effects of poison gases.

[5] Bainbridge also made important contributions to the mechanisms responsible for lymph formation, the function of the gallbladder, the circulatory effects of exercise, as well as on filtration properties of the glomeruli in the kidneys.