Alexander Fleming was born in Ayrshire, and grew up on a sheep farm until the age of 13 he moved out to London.
He trained to be a doctor and qualified with a distinction and started to work at St. Mary's.
However in World War 1 he served as a medical corps in the army, he was brought up in dispatches, after he went back to his job at St. Mary's.
After going away for 2 hot summer weeks, whilst studying influenza he came back to his place and noticed mould had formed on some of his dishes being used to grow a germ, the mold had made a bacteria free ring surrounding itself.
After he studied the mold further and named the substance penicillin but it was 2 other scientists that developed the substance further and they were named Howard Florey and Ernst Chain, they produced it as a drug.
Furthermore he became the professor of the medical during 1928, and emeritus professor of bacteriology at University of London 20 years later. In 1943 he was elected fellow of the Royal Society and then he was knighted in 1944 . However in 1945, he earnt a joint award with Florey, this was for Nobel Prize in Medicine. Unfortunately he passed away in 1995 on March the 11th.