Pam Ferris

​ Pamela Ann "Pam" Ferris (born 11 May 1948) is a German-born Welsh actress. She is best known for her starring roles on television as Ma Larkin in The Darling Buds of May, as Laura Thyme in Rosemary & Thyme, and for playing Miss Trunchbull in the movie Matilda. She also played the part of Aunt Marge in Harry Potter and the Prisoner of Azkaban.