<P> In 2001, Walters won a Laurence Olivier Award for her performance in Arthur Miller's All My Sons . She received her second Oscar nomination and won a BAFTA for her supporting role as the ballet teacher in Billy Elliot (2000). In 2002, she again won a BAFTA for her performance as Paul Reiser's mother in My Beautiful Son . </P> <P> Walters played Molly Weasley in the Harry Potter film series . Harry Potter and the Goblet of Fire is the only film in the series not to have starred Walters . </P> <P> In 2003, Walters starred as a widow (Annie Clark) determined to make some good come out of her husband's death from cancer in Calendar Girls, which starred Helen Mirren . In 2005, she again starred as an inspirational real - life figure, Marie Stubbs in the ITV1 drama Ahead of the Class . In 2006, she came fourth in ITV's poll of the public's 50 Greatest Stars, coming four places above frequent co-star Victoria Wood . Also in 2006, she starred in the film Driving Lessons alongside Rupert Grint (who played her son Ron in the Harry Potter series), and later had a leading role in the BBC's adaptation of Philip Pullman's novel The Ruby in the Smoke . </P> <P> In the summer of 2006, Walters published her first novel, Maggie's Tree . The novel, concerning a group of English actors in Manhattan and published by Weidenfeld & Nicolson, was described as "a disturbing and thought - provoking novel about mental torment and the often blackly comic, mixed - up ways we view ourselves and misread each other .". Another reviewer, Susan Jeffreys, in The Independent, described the novel as "the work of a writer who knows what she's doing . There's nothing tentative about the writing, and Walters brings her experiences as an actress to bear on the page...you do have the sensation of entering someone else's mind and of looking through someone else's eyes ." Walters starred in Asda's Christmas 2007 TV advertising campaign . She also appeared alongside Patrick Stewart in UK Nintendo DS Brain Training television advertisements, and in a public information film about smoke alarms . In summer 2008, Walters appeared in the film version of Mamma Mia!, playing Rosie Mulligan, marking her second high - profile musical, after Acorn Antiques: The Musical! . The same year, she released her autobiography titled That's Another Story . </P>

Who plays ron weasley's mom in harry potter
find me the text answering this question