Jaime Winstone
— Barbara Windsor (Young Adult)
Samantha Spiro
— Babs
Nick Moran
— John Deeks
Leanne Best
— Rose Deeks
Zoë Wanamaker
— Joan Littlewood
Barbara Windsor
— Barbara Windsor
Honor Kneafsey
— Teen Barbara
Florence Keen
— Child Barbara
Luke Allen-Gale
— Ronnie Knight
Julia Ford
— Julie Deeks
Nathan Harmer
— Brian Mickey
Marty Cruikshank
— Aida Foster
Peter Hamilton Dyer
— Producer
Alex Macqueen
— Peter Charlesworth
Charlie Archer
— Scott Mitchell
Jerry-Jane Pears
— Jayne Mansfield
Daniel Ben Zenou
— Lionel Bart
Lewis Kirk
— Johnny Brandon
Tom Forbes
— Warren Beatty
Rob Compton
— Ronnie Kray / Reggie Kray
Toby Wharton
— Charlie Kray
Adam Lazarus
— Theatre Performer (uncredited)
Sue Elliott-Nichols
— Barbara's Shoe Shop Manager
Tom Machell
— Man in Shoe Shop
Hannah Hutch
— Wife
Ross Green
— Ronnie Scott
James Atherton
— Cliff (Saxophonist)
Dean Roberts
— Stan
Todd Von Joel
— Neil
Lewis Maiella
— Chuck