Wanneer zijn ouders gaan ballroom dansen verblijft Ben (Buttery) altijd bij zijn grootmoeder (McKenzie). Hij vindt haar maar suf. Totdat hij ontdekt dat ze ooit een legendarische juwelendief was. Zou het geen leuk idee zijn om samen de kroonjuwelen uit de Tower of London te stelen?
Nee, helaas is Gangsta Granny nog niet beschikbaar op Netflix in Nederland.
| Writing | David Walliams | Novel |
| Directing | Matt Lipsey | Director |
| Writing | Kevin Cecil | Adaptation |
| Writing | Andy Riley | Adaptation |
| Production | Sue Longstaff | Associate Producer |
| Production | Mark Freeland | Executive Producer |
| Production | Jo Sargent | Producer |
| Sound | David Arnold | Original Music Composer |
| Sound | Michael Price | Original Music Composer |
| Camera | Tim Palmer | Director of Photography |
| Costume & Make-Up | Annie Hardinge | Costume Design |
| Costume & Make-Up | Helen Conroy | Makeup Artist |
| Production | John Cannon | Casting |
| Art | Samantha Jay Cliff | Art Direction |
| Art | Arwel Jones | Production Design |
| Editing | Joe Randall-Cutler | Editor |
| Production | Julia Crampsie | Casting |
| Production | Saskia Whinney | Unit Manager |
| Visual Effects | Jenny Anderson | Visual Effects Supervisor |
| Visual Effects | Barney Curnow | Visual Effects Supervisor |
| Costume & Make-Up | Annabelle McMahon | Makeup & Hair |
| Directing | Christian Rigg | Second Assistant Director |
| Costume & Make-Up | Roxana Habibi | Makeup Artist |
| Directing | Timothy Wood | Third Assistant Director |
| Directing | Jim Imber | First Assistant Director |
| Costume & Make-Up | Lisa Cavalli-Green | Makeup Designer |
| Costume & Make-Up | Lisa Cavalli-Green | Hair Designer |
| Camera | Gary Moyes | Still Photographer |
| Camera | Jon Howard | Focus Puller |
| Camera | Darren Johnson | Clapper Loader |
| Camera | Barney Piercy | Second Assistant Camera |
| Camera | Danny Crocker | Focus Puller |
| Lighting | Ian Glenister | Gaffer |
| Editing | Gary Scullion | Assistant Editor |
| Crew | Jo Wellings | Choreographer |
| Crew | Ray De-Haan | Stunt Coordinator |
| Production | Katie Neal | Production Coordinator |
| Directing | Karen Savage | Script Supervisor |
| Production | Saskia Whinney | Location Manager |
| Camera | Claire Pie | Clapper Loader |
| Costume & Make-Up | Debbie Roberts | Assistant Costume Designer |
| Editing | Alexander Leask | Colorist |
| Production | Nikki Chamberlin | Production Accountant |
| Camera | James Leckey | First Assistant Camera |
| Lighting | Suzanne Sanders | Rigging Gaffer |
