- Letitia Wright - Altheia Jones
- Shaun Parkes - Frank Crichlow
- Malachi Kirby - Darcus Howe
- Rochenda Sandall - Barbara Beese
- Jack Lowden - Ian MacDonald
- Sam Spruell - PC Pulley
- Gershwyn Eustache Jnr - Eddie LeCointe Jnr
- Nathaniel Martello-White - Rhodan Gordan
- Richie Campbell - Rothwell Kentish
- Jumayn Hunter - Godfrey Millett
- Gary Beadle - Dolston Isaacs
- Richard Cordery - Mr. Croft
- Alex Jennings - Judge Clarke
- Derek Griffiths - CLR James
- Jodhi May - Selma James
- Llewella Gideon - Aunt Betty
- Tahj Miles - Kendrick Manning
- Michelle Greenidge - Mrs. Manning
- Thomas Coombes - PC Royce
- Joseph Quinn - PC Dixon
- Doreen Ingleton - Mrs. Tetley
- Tyrone Huggins - Granville
- Samuel West - Mr. Hill
- Joe Tucker - Court Officer 1
- James Hillier - Chief Inspector
- Ben Caplan - Mr. Stedman
- Stefan Kalipha - Card player
- Jay Simpson - Duty Officer
- Akbar Kurtha - Dr. Chadee
- Shem Hamilton - Benson
- Jon Prophet - James (uncredited)
- Amarah-Jae St. Aubyn - Martha
- Micheal Ward - Franklyn
- Shaniqua Okwok - Patty
- Kedar Williams-Stirling - Clifton
- Ellis George - Cynthia
- Francis Lovehall - Reggie
- Daniel Francis-Swaby - Bammy
- Alexander James-Blake - Parker B
- Kadeem Ramsay - Samson
- Romario Simpson - Lizard
- Jermaine Freeman - Skinner
- Marcus Fraser - Jabba
- Saffron Coomber - Grace
- Frankie Fox - Eddie Marks
- Dennis Bovell - Milton
- Sheyi Cole - Alex Wheatle
- Robbie Gee - Simeon
- Jonathan Jules - Dennis Isaacs
- Elliot Edusah - Valentine Golding (Valin)
- Ashley McGuire - Cook
- Johann Myers - Cutlass Rankin
- Louis j Rhone - Rankin's Dread
- Zakiyyah Deen - Barber Dread
- Sharlene Whyte - Agnes Smith
- Tamara Lawrance - Stephanie Smith (Age 18)
- Daniel Francis - Esmond Smith
- Josette Simon - Lydia Thomas
- Ryan Masher - Joseph
- Naomi Ackie - Hazel
- Jairaj Varsani - Sajid
- Aiyana Goodfellow - Nina
- John Boyega - Leroy Logan
- Khali Best - Badger
- Tabitha Byron - Sheila (Age 10)
- Kate Dickie - Miss Gill
- Stewart Wright - Mr. Baines
- Nigel Boyle - Mr. Harnley
- Steve Toussaint - Ken Logan
- Dexter Flanders - Floyd
- Roshawn Hewitt - Baz (Age 13)
- Adrian Rawlins - Headmaster Mr. Evans
- Joy Richardson - Mrs. Logan
- Xavien Russell - Jerry
- Trevor Laird - Augustin
- Jade Anouka - Mrs. Morrison
- Kayla Meikle - Mrs. Howard
- Antonia Thomas - Gretl
- Cecilia Noble - Mrs. Isaacs
- Seroca Davis - Hyacinth
- Liam Garrigan - Greg Huggan
- Tyrone Huntley - Leee John
- Nadine Marshall - Jesse John
- Mark Stanley - Ed Harrigan
- Assad Zaman - PC Asif Kamali
- Jim Sturgeon - Class Instructor
- Eddie-Joe Robinson - PC Milar
- Lorna Gayle - Linda
- Neil Maskell - Inspector Willis
- Steve Nicolson - Drill Instructor
- Joshua Hill - PC May
- Ciarán Owens - Senior Officer
- Cory Peterson - Philford
- Neal Barry - Desk Sergeant
- Samuel Oatley - PC Cooper
- John Hodgkinson - Interviewer
- Stephen Boxer - Chief Inspector
- Tyrone Jeffers - Record Shop Customer (uncredited)
- Calum Callaghan - PC Beck
- Jo Martin - Mrs. Bartholemew
Robbie Gee hace el papel de Simeon.
Adrian Rawlins hace el papel de Headmaster Mr. Evans.
Akbar Kurtha interpreta a Dr. Chadee en la serie.
Capítulo disponible en las siguientes plataformas:
