Kate Firth (born 1962) is a professional voice coach and stage actress, and sister to actors Colin and Jonathan Firth. She has a therapeutic counsellor background in the field of human communication, and extensive experience in theatre, psychology and applied linguistics.She was born in Nigeria in 1962. Her parents, Shirley Jean (née Rolles)and David Norman Lewis Firth were both children of Methodist missionaries in Nigeria, and after their marriage worked as teachers there.