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