David Walliams with the cast of the Gangsta Granny theatre production.
Media playback is unsupported on your device

David Walliams gran was his inspiration for Gangsta Granny

26 September 2015 Last updated at 08:07 BST

The children's Author, David Walliams, says his own Grandma inspired him to write his book Gangsta Granny.

The character in his book used to be an international jewel thief and has always wanted to steal the Crown Jewels.

Her house smells of cabbage, and she likes to play scrabble.

He says his own granny was funny, and liked to tell him stories about when she was a young girl.

The book has already been made into a TV programme and now it's being made into a theatre play.