MRCS LRCP 1902, MA MB Camb 1903.
Loveday was born in 1876 and was educated at Giggleswick, Caius College, Cambridge, and St Bartholomew's Hospital. He held junior appointments at Addenbrooke's and Salop Infirmary before joining the staff of the pathological department at St Mary's Hospital London, under Sir Almroth Wright. At St Mary's, Loveday began his studies on vaccine therapy. He came to MRI in 1906 to introduce vaccine therapy and was shortly afterwards appointed director of the clinical laboratory. He continued in this position until his death, though served during the first war as a pathologist in Manchester and France. The clinical laboratory at MRI was very small when Loveday joined, consisting of himself and an assistant, but by the time of his death there were twenty staff and new premises. Loveday also initiated the blood transfusion service when blood supplies were low. Loveday was later reader in clinical pathology at the University of Manchester, but he had little time for teaching. Loveday drowned on 25 August 1937.