Ralph Thomas MC (born Ralph Philip Thomas 10 August 1915 – 17 March 2001) was an English film director, born in Hull. He is perhaps best known for directing the Doctor series of films.His brother, Gerald Thomas, was also a film director, probably best remembered for the Carry On... film series, and his son is the Academy Award-winning film producer, Jeremy Thomas.He cast the actor James Robertson Justice in many of his films. Thomas often worked with the producer Betty E.