 With her doctor 's approval , Leigh was well enough to resume acting in 1946 , starring in a successful London production of Thornton Wilder 's The Skin of Our Teeth ; but her films of this period , Caesar and Cleopatra ( 1945 ) and Anna Karenina ( 1948 ) , were not great commercial successes . All British films in this period were adversely affected by a Hollywood boycott of British films . 
