Henry & June (1990) is the only film in which he's been credited as "Maurice Escargot."
Was offered the role of General Grievous in Star Wars: Episode III - Revenge of the Sith (2005), and he accepted the role. However, he later declined the role after complications arose during contract negotiations.
His film Nil by Mouth (1997) is loosely based upon his own life growing up in London
Was orginally signed to play the Prison Warden in The Longest Yard (2005) before negotiations fell through. That role was then given to James Cromwell.
Has been dating model-actress Ailsa Marshall since 2002.
Has played Lee Harvey Oswald in both JFK (1991) and "Who Was Lee Harvey Oswald?" (1992) (mini).
He was awarded the 1985 London Critics Circle Theatre Award (Drama Theatre Award) for Best Actor for his performance in The Pope's Wedding.
Shares birthday with Matthew Broderick, who voices the adult Simba in both 'The Lion King' and 'The Lion King 1 1/2', the latter being similar in plot to Tom Stoppard's film 'Rosencrantz and Guildenstern Are Dead', in which Oldman played Rosencrantz.
He and Harry Potter and the Prisoner of Azkaban (2004) co-star Timothy Spall have both played the character of Rosencrantz; Spall in Kenneth Branagh's Hamlet (1996), Oldman in _Rosencrantz and Guildenstern Are Dead (1990)_ .
Has used a different speaking voice (i.e. accent) in practically every movie he's ever been in.