Since the 1970s, British historical figures have featured on the back of banknotes issued by the Bank of England.
Excluding the incumbent monarchs (who feature on the front of the banknote) there have been a total of 19* individuals to feature on these banknotes.
surely the first fiver guy was better known for his military prowess rather than his political office? The note itself showed him in field marshall uniform and portrays Salamanca.