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.
| Directing | Simon Rumley | Director |
| Camera | Milton Kam | Director of Photography |
| Editing | Tom Parsons | Editor |
| Writing | Simon Rumley | Writer |
| Sound | Richard Chester | Music |
| Writing | Will Gilbey | Writer |
| Writing | Terry Stone | Writer |
| Production | Terry Stone | Producer |
| Production | Richard Turner | Producer |
| Production | Michelle Smith | Casting |
| Production | Terry Stone | Casting |
| Art | Joshua Noon | Art Direction |
| Art | Anna Mould | Production Design |
| Art | Charlotte Coulter | Set Decoration |
| Costume & Make-Up | Michelle May | Costume Design |
| Costume & Make-Up | Annelies Henny | Costume Supervisor |
| Costume & Make-Up | Nicola Wilson | Key Set Costumer |
| Sound | Rupert Hollier | Music Supervisor |
| Lighting | Peter Riches | Electrician |
| Lighting | John Letsinger | Electrician |
| Camera | Leo Winslow | First Assistant "D" Camera |
| Camera | Stuart Nicholas White | Second Unit Director of Photography |
| Camera | Julie Edwards | Still Photographer |
| Costume & Make-Up | Emma J. Slater | Hair Designer |
| Costume & Make-Up | Naomi Tolan | Key Makeup Artist |
| Costume & Make-Up | Diandra Ferreira | Makeup Artist |
| Costume & Make-Up | Emma J. Slater | Makeup Designer |
| Production | Ray Empson | Executive Producer |
| Production | Tiernan Hanby | Co-Producer |
| Production | Andrew Harvey | Line Producer |
| Production | Chris Howard | Executive Producer |
| Production | Jyotsna Shah | Executive Producer |
| Production | Piyush Shah | Executive Producer |
| Production | Jezz Vernon | Executive Producer |
| Costume & Make-Up | Hayley Belle | Makeup Artist |
| Production | Nancy Jiang | Production Secretary |
| Production | Joe Karimi-Nik | Production Manager |
| Directing | Christiaan Faberij de Jonge | First Assistant Director |
| Directing | Erin Large | Second Assistant Director |
| Directing | Michael Searle | Third Assistant Director |
| Directing | Albertine Selvik | Assistant Director |
| Art | Ashleigh Latter | Set Dresser |
| Sound | Raoul Brand | Dialogue Editor |
| Sound | Duncan Campbell | Foley Recordist |
| Sound | Craig Conybeare | Boom Operator |
| Sound | Max Devere | Sound Mixer |
| Sound | Stephen Goldsmith | Foley Supervisor |
| Sound | Karolina Jedrzejczyk | Foley Artist |
| Sound | Adrian Medhurst | Foley Artist |
| Sound | Tom Pallant | Boom Operator |
| Sound | John Simpson | Foley Artist |
| Sound | Lisa Simpson | Foley Recordist |
| Sound | Anna Sulley | Foley Recordist |
| Sound | Vincent Watts | Sound Designer |
| Visual Effects | Scott McIntyre | Special Effects Supervisor |
| Visual Effects | Daniel Waterman | Visual Effects Supervisor |
| Crew | Jason Beeston | Stunts |
| Crew | Simone Belli | Stunts |
| Crew | Sean Bingham | Stunts |
| Crew | Dominic Kinnaird | Stunt Double |
| Crew | Stewert Lyddall | Stunts |
| Crew | Nathaniel Marten | Stunts |
| Crew | Mathew McKay | Stunts |
| Crew | Tiago Silva | Stunts |
| Crew | Dan Styles | Stunt Coordinator |
| Crew | Ronin Traynor | Stunt Coordinator |
| Crew | James Unsworth | Stunts |
| Lighting | Lou Bogue | Gaffer |
| Camera | Ashley Cooke | Second Assistant "A" Camera |
| Camera | Katie Davey | Second Assistant Camera |
| Camera | Kate Louise Eccarius | Focus Puller |
| Camera | Oliver Hallam | Second Assistant "B" Camera |
| Camera | Ed Stone | Camera Operator |
| Production | Matat Levin | Location Manager |
| Production | Florian Cassel-Delavois | Production Coordinator |
| Crew | Ada Wesolowska | Set Runner |
