Rebecca Hall

Florence Cathcart

Dominic West

Robert Mallory

Imelda Staunton

Maud Hill

Isaac Hempstead Wright

Tom

Lucy Cohu

Constance Strickland

Cal MacAninch

Freddie Strickland

John Shrapnel

Reverend Hugh Purslow

Diana Kent

Harriet Cathcart

Richard Durden

Alexander Cathcart

Alfie Field

Victor Parry

Tilly Vosburgh

Vera Flood

Ian Hanmore

Albert Flood

Andrew Havill

George Vandermeer

Anastasia Hille

Dorothy Vandermeer

Joseph Mawle

Edward Judd

Shaun Dooley

Malcolm McNair

Steven Cree

Sergeant Evans

Felix Soper

Julian Dowden

Sidney Johnston

John Franklin

Spike White

Alistair Howell

Charlie Callaghan

Chris Hartley

James Kirkham

William Ramsbottom

Ewan Andrew Walker

Richard McGorian

Adam Thomas Wright

Max Tebbitts

Ben Greaves-Neal

Child Impostor

Daniel Pirrie

Captain Mills

Nicholas Amer

Edgar Hirsthwit

Nick Murphy

Teacher 1

Neil Broome

School Master (uncredited)