Which university's medical school now includes St Mary's Hospital Medical School?

St Mary’s Hospital Medical School is now part of Imperial College London.

Fleming enrolled at St Mary’s Hospital Medical School in Paddington in the early 1900s and qualified there in 1906. The school later became one of the institutions incorporated into Imperial’s medical education and research structure.

St Mary’s history is especially associated with Fleming because he returned there after military service in the First World War and worked in the laboratory of Almroth Wright. In 1928, Fleming observed the antibacterial effects of the mould that led to the discovery of penicillin at St Mary’s Hospital.

The institutional change can cause confusion: Fleming did not study at a medical school originally called Imperial College London. St Mary’s Hospital Medical School merged with Imperial College in 1988, helping form the modern Imperial College School of Medicine.