He also appeared in police drama HolbyBlue on BBC 1 during 2007-8. Macaninch went on to play Rowan Collins in Series 4 of the ITV drama series Wild at Heart. He returned to the show for its fifth series as a main cast member. Cal also starred in the 2001 BBC mini series "The Best of Both Worlds" with Alice Evans. He played a valet, Henry Lang, in the second series of Downton Abbey. Cal once lent his support as a volunteer on a Sense holiday, working with deafblind people.