​Born Patrick Carl Cheeseman in Cleethorpes, Lincolnshire, England. He was brought up in neighbouring Grimsby and frequently re-visited the area during the height of his career. He attended University College, London, before training at the Old Vic Theatre School and making his first stage appearance in a walk-on part in Othello in 1951. He toured South Africa the following year and then directed plays for the drama department at Stanford University, California. Moving to the Shakespeare Memorial Theatre, Stratford-upon-Avon, Wymark played a wide range of traditional roles, including Dogberry in Much Ado about Nothing and Stephano in The Tempest. He also played the parts of Marullus in Julius Caesar and Bottom in A Midsummer Night's Dream. Other stage parts included the title role in Danton's Death and, with the Royal Shakespeare Company, Ephihodov in The Cherry Orchard. His theatre roles also included playing the part of Bosola in a Royal Shakespeare Company production of John Webster's The Duchess of Malfi in 1960. His film roles included: Children of the Damned (1964), Operation Crossbow (1965), Battle of Britain (1969), Where Eagles Dare (1968), Blood on Satan's Claw (1971) and Cromwell (1970). On television, where at one point he was considered as a replacement for William Hartnell on Doctor Who., he was best known for his role as the machiavellian businessman John Wilder in the drama series The Plane Makers/The Power Game, a role which led to offers of company directorships. Wymark, however, was a gentle man in real life, self-confessedly ignorant of business matters, who considered the Wilder character to be a "bastard" and was described by his wife as "the most inefficient, dreamy muddler in the world." (오뜨랑에서 실시간으로 번역된 한글 프로필도 확인할 수 있어요) 2008년 Walt Disney Treasures - Dr. Syn: The Scarecrow of Romney Marsh에서 Joseph Ransley (archive footage) 역을 맡았다. 1972년 Человек с другой стороны에서 Christian Holm 역을 맡았다. 1971년 사탄의 피부에서 The Judge 역을 맡았다.