Peter Vaughan (born 4 April 1923) is an English character actor, known for many supporting roles in a variety of British film and television productions. He has worked extensively on the stage, becoming known for roles such as police inspectors, Soviet agents and similar parts. He is best known for his role as Grouty in the sitcom Porridge (despite appearing in only three episodes) and also had a recurring role alongside Robert Lindsay in Citizen Smith, written by John Sullivan.