Het verhaal van de opkomst en val van een Engels crimineel imperium dat drie decennia actief was vanaf de late jaren dertig. De eens vrienden en partners in de misdaad werden bittere vijanden. Ze waren verantwoordelijk voor gewelddadige afpersingen, wrede wetsovertredingen, schokkende corruptieschandalen en glamoureuze bondgenootschappen, hetgeen uiteindelijk de weg vrij maakte voor de beruchte Kray-tweeling.
Nee, helaas is Once Upon a Time in London nog niet beschikbaar op Netflix in Nederland.
| Editing | Tom Parsons | Editor |
| Camera | Milton Kam | Director of Photography |
| Directing | Simon Rumley | Director |
| Writing | Simon Rumley | Writer |
| Sound | Richard Chester | Music |
| Writing | Will Gilbey | Writer |
| Writing | Terry Stone | Writer |
| Production | Terry Stone | Producer |
| Production | Richard Turner | Producer |
| Art | Joshua Noon | Art Direction |
| Production | Michelle Smith | Casting |
| Production | Terry Stone | Casting |
| Costume & Make-Up | Michelle May | Costume Design |
| Art | Anna Mould | Production Design |
| Art | Charlotte Coulter | Set Decoration |
| Costume & Make-Up | Nicola Wilson | Key Set Costumer |
| Sound | Rupert Hollier | Music Supervisor |
| Costume & Make-Up | Annelies Henny | Costume Supervisor |
| Costume & Make-Up | Diandra Ferreira | Makeup Artist |
| Camera | Stuart Nicholas White | Second Unit Director of Photography |
| Costume & Make-Up | Emma J. Slater | Hair Designer |
| Costume & Make-Up | Emma J. Slater | Makeup Designer |
| Camera | Julie Edwards | Still Photographer |
| Lighting | Peter Riches | Electrician |
| Costume & Make-Up | Naomi Tolan | Key Makeup Artist |
| Lighting | John Letsinger | Electrician |
| Camera | Leo Winslow | First Assistant "D" Camera |
| Sound | Stephen Goldsmith | Foley Supervisor |
| Sound | Adrian Medhurst | Foley Artist |
| Directing | Albertine Selvik | Assistant Director |
| Camera | Katie Davey | Second Assistant Camera |
| Sound | Max Devere | Sound Mixer |
| Production | Chris Howard | Executive Producer |
| Production | Tiernan Hanby | Co-Producer |
| Sound | Craig Conybeare | Boom Operator |
| Production | Jyotsna Shah | Executive Producer |
| Sound | John Simpson | Foley Artist |
| Directing | Michael Searle | Third Assistant Director |
| Sound | Karolina Jedrzejczyk | Foley Artist |
| Production | Andrew Harvey | Line Producer |
| Costume & Make-Up | Hayley Belle | Makeup Artist |
| Production | Joe Karimi-Nik | Production Manager |
| Directing | Erin Large | Second Assistant Director |
| Sound | Raoul Brand | Dialogue Editor |
| Production | Piyush Shah | Executive Producer |
| Sound | Duncan Campbell | Foley Recordist |
| Art | Ashleigh Latter | Set Dresser |
| Sound | Anna Sulley | Foley Recordist |
| Visual Effects | Scott McIntyre | Special Effects Supervisor |
| Crew | Nathaniel Marten | Stunts |
| Production | Ray Empson | Executive Producer |
| Production | Nancy Jiang | Production Secretary |
| Sound | Tom Pallant | Boom Operator |
| Crew | Simone Belli | Stunts |
| Production | Jezz Vernon | Executive Producer |
| Directing | Christiaan Faberij de Jonge | First Assistant Director |
| Sound | Lisa Simpson | Foley Recordist |
| Sound | Vincent Watts | Sound Designer |
| Crew | Ronin Traynor | Stunt Coordinator |
| Crew | Jason Beeston | Stunts |
| Crew | Dominic Kinnaird | Stunt Double |
| Crew | Stewert Lyddall | Stunts |
| Production | Matat Levin | Location Manager |
| Crew | Mathew McKay | Stunts |
| Lighting | Lou Bogue | Gaffer |
| Camera | Kate Louise Eccarius | Focus Puller |
| Camera | Oliver Hallam | Second Assistant "B" Camera |
| Crew | Ada Wesolowska | Set Runner |
| Visual Effects | Daniel Waterman | Visual Effects Supervisor |
| Crew | Sean Bingham | Stunts |
| Crew | Tiago Silva | Stunts |
| Crew | James Unsworth | Stunts |
| Camera | Ashley Cooke | Second Assistant "A" Camera |
| Camera | Ed Stone | Camera Operator |
| Production | Florian Cassel-Delavois | Production Coordinator |
| Crew | Dan Styles | Stunt Coordinator |
