Gangsta Granny stars Julia McKenzie, Joanna Lumley, Rob Brydon and Miranda Hart as they bring David Walliams’ best-selling children’s novel to life. Ben is bored as he is forced to stay at the house of his grandma as all she ever wants to do is play Scrabble and eat cabbage soup. One day though she tells him a story that she was once an international jewel thief, and together they go on a wild adventure to complete the one heist she never quite managed to do.