Cal MacAninch is a Scottish actor, who is known for portraying the character of DI John Keenan in police drama HolbyBlue on BBC1 (from 2007 to 2008). Other notable appearances were his roles as Mr Thackeray in the ITV period drama, Mr Selfridge, and Henry Lang in Downton Abbey, but he has played many leading roles in British television and film over the last 30 years.