Alexander Fleming lived much of his adult life in this grand townhouse close to the River Thames on the edge of Chelsea. Without a hint of Hyperbole one can assert that Fleming is one of a handful of scientists who have dramatically changed the world with one discovery or invention. A spore that drifted into a dish in Fleming’s lab lead to a chain of events that would change medicine forever when Fleming went on to invent penicillin, the first anti-biotic drug that would save millions of lives across the world.