Aden was a guest star in the Scottish drama series 'Taggart' in 2000. He played Robin Murray in the episode 'Wavelength.' In 2005, his 'House of Eliott' co-star Stella Gonet was also a guest star on the show.
Aden's first credited television appearance was in 1986 when he played a reporter in an episode of the ITV sitcom 'Hot Metal'.
Aden starred in the West End production of Michael Frayn's comedy 'Noises Off' in 2000.
In the 1997 television series 'Ivanhoe', Aden played the character of Robin Hood.
Aden played Henrik Galeen in the 2000 gothic horror film 'Shadow of The Vampire' alongside actors John Malkovich and Willem Dafoe.
In 1997, Aden appeared in a film version of 'The Borrowers' as Joe Lender alongside John Goodman ( 'Rosanne' ) and Hugh Laurie ( 'House.' )
In August 2005, Aden played the lead role of Benedick in a production of Shakespeare's 'Much Ado About Nothing' at the Theatre Royal.
In 2004, Aden received rave reviews for his performance as Charles Condomine in a production of Noel Coward's classic play 'Blithe Spirit.'
Aden starred in the BBC drama 'The House of Eliott' as photographer Jack Maddox. His wife, Sara Stewart, appeared as a guest star in episode seven of the series as Hollywood bound actress Francine Bailey.