Pam Ferris

Pamela E. "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, and as Laura Thyme in Rosemary & Thyme, and for her parts in the family films based on works by British authors as Miss Trunchbull in Matilda and as Aunt Marge in Harry Potter and the Prisoner of Azkaban.