Judi Dench as Joan Elizabeth Stanley

Sophie Cookson as Young Joan Elizabeth Stanley

Tom Hughes as Leo Galich

Tereza Srbova as Sonya Galich

Stephen Campbell Moore as Max

Ben Miles as Nick

Nina Sosanya as Ms. Hart

Laurence Spellman as Mr Adams

Nicola Sloane as Joan's Neighbor

Freddie Gaminara as William

Raj Swamy as Kharak

Adrian Wheeler as Heckler

Lulu Meissner as Waitress

Phill Langhorne as Uniformed Policeman

Mike Sykes as Security Guard

Ed Birch as Donald

Debbie Chazen as Karen

Robin Soans as Clement Attlee

Raymond Coulthard as James Chadwick

Simon Ludders as Naval Captain

Stuart Milligan as Taylor Scott

Stephen Boxer as Peter Kierl

Lily Delderfield as Katya

Jessica Delderfield as Katya

Ciarán Owens as Detective Hughes

Kevin Fuller as Detective Phillips

Hasan Dixon as Police Constable

Richard Teverson as Detective Watson

Steven Hillman as Prison Guard

Irfan Shamji as Journalist