Suave, charming and volatile, Reggie Kray and his unstable twin brother Ronnie start to leave their mark on the London underworld in the 1960s. Using violence to get what they want, the siblings orchestrate robberies and murders while running nightclubs and protection rackets. With police Detective Leonard "Nipper" Read hot on their heels, the brothers continue their rapid rise to power and achieve tabloid notoriety.
| Writing | Brian Helgeland | Writer |
| Directing | Brian Helgeland | Director |
| Editing | Peter McNulty | Editor |
| Directing | Beverly Winston | Script Supervisor |
| Production | Lucinda Syson | Casting |
| Production | Eric Fellner | Producer |
| Production | Brian Oliver | Producer |
| Production | Chris Clark | Producer |
| Production | Quentin Curtis | Producer |
| Art | Tom Conroy | Production Design |
| Production | Tim Bevan | Producer |
| Production | Jane Robertson | Co-Producer |
| Sound | Carter Burwell | Original Music Composer |
| Production | Olivier Courson | Executive Producer |
| Writing | John Pearson | Book |
| Production | Tom Hardy | Executive Producer |
| Production | Kate Solomon | Executive Producer |
| Production | Tyler Thompson | Executive Producer |
| Production | Ron Halpern | Executive Producer |
| Production | Buddy Patrick | Executive Producer |
| Sound | Liz Gallacher | Music Supervisor |
| Art | Crispian Sallis | Set Decoration |
| Camera | Simon Mein | Still Photographer |
| Costume & Make-Up | Caroline Harris | Costume Design |
| Camera | Dick Pope | Director of Photography |
| Art | Marco Anton Restivo | Art Direction |
| Art | Gareth Cousins | Art Direction |
| Sound | Adam Milo Smalley | Music Editor |
| Crew | Litza Bixler | Choreographer |
| Production | Kate Ringsell | Casting Associate |
| Art | Rebecca White | Assistant Art Director |
| Costume & Make-Up | Sheara Abrahams | Assistant Costume Designer |
| Crew | Dan Osborne | Armorer |
| Costume & Make-Up | Ray Marston | Wigmaker |
| Costume & Make-Up | Marco Scotti | Costume Supervisor |
| Art | Oliver Benson | Assistant Art Director |
| Costume & Make-Up | Kirsty Mcqueen | Makeup Artist |
| Costume & Make-Up | Emma Heath | Set Costumer |
| Costume & Make-Up | Christine Blundell | Makeup Artist |
| Costume & Make-Up | Audrey Doyle | Makeup Artist |
| Crew | Muffin Green | Property Master |
| Costume & Make-Up | Oliver Southall | Set Costumer |
| Production | Peter Mallouk | Executive Producer |
| Production | Ray Mallouk | Executive Producer |
| Production | Amelia Granger | Executive Producer |
| Production | Michael Bassick | Executive Producer |
| Production | Liza Chasin | Executive Producer |
| Production | Christopher Woodrow | Executive Producer |
| Production | Timmy Thompson | Executive Producer |
| Sound | Ben Meechan | Sound Designer |
| Sound | Dafydd Archard | Sound Mix Technician |
| Sound | Kirsten Lane | Music Supervisor |
| Crew | Julian Spencer | Stunt Coordinator |
| Crew | Zarene Dallas | Stunts |
| Crew | Matt Crook | Stunts |
| Art | Elo Soode | Concept Artist |
| Art | Elo Soode | Conceptual Design |
| Sound | Peter Burgis | Foley Artist |
| Sound | Mark Appleby | ADR Mixer |
| Sound | Glen Gathard | Foley Mixer |
| Sound | Jeffrey J. Haboush | Sound Re-Recording Mixer |
| Sound | Peter Hanson | Foley Editor |
| Sound | Nick Kray | ADR Mixer |
| Sound | Jason Swanscott | Foley Artist |
| Sound | Kevin Penney | Foley Editor |
| Sound | Mark Taylor | Sound Re-Recording Mixer |
| Sound | Jack Stew | Foley Artist |
| Sound | Jemma Riley-Tolch | Assistant Foley Artist |
| Sound | Adam Horley | Dialogue Editor |
| Costume & Make-Up | Christine Blundell | Hairstylist |
| Costume & Make-Up | Sophie Finch | Makeup Artist |
| Costume & Make-Up | Chris Lyons | Special Effects Makeup Artist |
| Costume & Make-Up | Nathaniel De'Lineadeus | Special Effects Makeup Artist |
| Costume & Make-Up | Jo Nielsen | Hairstylist |
| Costume & Make-Up | Chloe Meddings | Makeup Artist |
| Costume & Make-Up | Chloe Meddings | Hairstylist |
| Costume & Make-Up | Nuria Mbomio | Makeup Artist |
| Costume & Make-Up | Lee Nicholas Harris | Makeup Artist |
| Art | Kevin Day | Props |
| Crew | Jacob Tomuri | Stunts |
