Hertford (The Bloodless Soldier)
From Tardis Wiki, the free Doctor Who reference
Captain Hertford was the leader of a group of soldiers who were fighting in India. He was bitten by an animal and suddenly began to transform. Within his rapidly changing body, he craved blood and killed many people in London. He was eventually shot, in case of further killings, by his fellow soldier Higson. (JAL: The Bloodless Soldier)