Career
He is currently appearing in the Independent Television period drama, Mr Selfridge, as Mr Thackeray. MacAninch played Rowan Collins in Series 4 of the Independent Television drama series Wild at Heart. He returned to the show for its fifth series as a main cast member.
He also played Tauren, a sorcerer in the British Broadcasting Corporation television series Merlin in the episode "To Kill the King".
He starred in the 2001 British Broadcasting Corporation miniseries The Best of Both Worlds with Alice Evans. He appeared as Henry Language, a valet, in the second series of Downton Abbey.
MacAninch is a keen marathon runner.