She's an OAP with attitude! When Mum and Dad drop schoolboy Ben off to stay at his granny’s for the evening, he expects the usual--boring old cabbage soup, never-ending knitting and endless scrabble with his equally boring grandma. Until one day, Ben’s granny tells him an incredible story… that she was once known as the ‘Black Cat’, a notorious international jewel thief! Together they go on a wild adventure to complete the one heist she never quite managed in her criminal heyday--to break into the Tower of London, and steal the crown jewels. Based on the bestselling book by David Walliams and boasting an impressive all-star cast including Joanna Lumley, Rob Brydon, Miranda Hart, Julia McKenzie and a hilarious cameo from superstar Robbie Williams, Gangsta Granny is a must-see comedy treat for all the family. Starring Julia McKenzie, Reece Buttery, Joanna Lumley, David Walliams, Miranda Hart, Rob Brydon,Harish Patel and guest starring Robbie Williams