In 1951, Wanamaker made a speech welcoming the return of two of the Hollywood Ten. In 1952, at the height of the McCarthy "Red Scare" period, despite his distinguished Service in the Army during World War II, Wanamaker, who was then acting in the UK, learned that his early years as a sympathizer of liberalism could be used to have him blacklisted in Hollywood. He consequently decided to remain in England, where he reestablished his career as a stage and film actor, along with becoming a Director and Producer. He explains: