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Miriam Margolyes is one of Britain's best loved and most provocative actresses. Across her eclectic career, she has played scene-stealing turns in Blackadder, voiced some of our most well-known adverts and found fame internationally as Professor Sprout in the Harry Potter films.

Following the release of her best-selling autobiography, This Much Is True, Miriam opens up to Alan Yentob, with disarming frankness, about her career highs and her most vulnerable moments. Offering further insight into Miriam's career are some of the actors who know her best, including Richard E Grant, Charles Dance, Dame Eileen Atkins, Patricia Hodge, Tony Robinson and Dame Vanessa Redgrave.

Miriam's one-person show, Dickens' Women, won her great critical acclaim, and she received a Bafta for her performance in Martin Scorsese's The Age of Innocence. Yet, at age 80, she feels she has still not achieved enough.