Emma Appleton
Thomasina Hanbury
Stefanie Martini
Martha Hanbury
Rory Fleck-Byrne
Lt. Sebastian Holloway
Aaron Monaghan
Major. Henry Cobcroft
Theodora Brabazon Legge
Young Thomasina Hanbury
Francesca Brabazon Legge
Young Martha Hanbury
Eva O'Brien
Teenage Thomasina
Chacha Seigne
Lola Hanbury
Shaun Boylan
Reginald Watson
Neil Hannon
Reginald Watson (voice)
Lorcan Cranitch
Major. General Norbury
Ian Toner
German Soldier at Checkpoint
Michael Hulsmann
German Soldier at Checkpoint (voice)
Hugh O'Conor
Enoch Johnson
Serena Brabazon
Rachel Johnson
Aran Murphy
Leo
Ayvianna Snow
Rebecca Cavendish
Nick Dunning
Television Newsreader
William Forrest
Young Reginald Watson
Richard Elfyn
Winston Churchill / Various Voices (voice)
Gerald Tyler
Various Voices (voice)
Hamish Stanfeld
Various Voices (voice)
Philip Condron
Sturmführer Hemplestall
Frank Armstrong
St. Paul's Nazi #1
Matthew McCann
St. Paul's Nazi #2
Melanie Leonard
Reginald Watson's Dancer #1
Ciara Nash
Reginald Watson's Dancer #2
Anja Nicholson
Reginald Watson's Dancer #3
David Bowie
Self - Singer (archive footage)
Adolf Hitler
Self - Politician (archive footage)
Winston Churchill
Self - Politician (archive footage)
Franklin D. Roosevelt
Self - Politician (archive footage)
Oswald Mosley
Self - BUF Leader (archive footage)
Joseph P. Kennedy Sr.
Self - Diplomat (archive footage)
Ian Dillon
German Wermacht Officer (uncredited)