Ben, an 11 year old, curious boy, hates having to stay with his old Granny every Friday because his parents go to see a dancing show named Strictly Stars Dancing which is a parody of Strictly Come Dancing. He finds it boring and repetitive as his Granny always feeds him cabbage-related dishes, most commonly cabbage soup and cabbage chocolate, and they are constantly playing Scrabble, plus her television hasn't been working since the 19’000 Ben loves plumbing and is a long-term subscriber to the magazine Plumbing Weekly, which he buys every week from Raj's news-agency. Ben's parents disapprove of him being a plumber, as their ambition for their only child was to be a professional ballroom dancer like the one they used to watch every Friday.
On 21 March 2020, Alton Towers Resort in Staffordshire, England launched The World of David Walliams, with the main theme of the area being focused on the Gangsta Granny book. The new area features a 4D dark ride titled Gangsta Granny: The Ride, where guests embark on a crown jewels tour which is then sabotaged by Ben and Granny who persuade the guests to join them on a heist of a lifetime to steal the crown jewels. Gangsta Granny: The Ride opened on 17 May 2021.[3]