Copper (Voyage of the Damned)

Bayldon Copper is an employee aboard the Titanic. He pretends to have a first class degree in Earthonomics to get the job of Ship Historian. He was a travelling salesman, reaching retirement with nothing to show for it: no house or anything. He assists the Doctor to get rid of the Heavenly Host and ends up a survivor. The Doctor informs him that the credit card he had was worth 50 million credits. Pleased, he plans to buy a house.