Ian McKellen as Jimmy Erskine

Gemma Arterton as Nina Land

Mark Strong as David Brooke

Lesley Manville as Annabel Land

Ben Barnes as Stephen Wyley

Romola Garai as Cora Wyley

Alfred Enoch as Tom Tunner

Ron Cook as Hugh Morris

Claire Skinner as Mary Brooke

Matthew Cottle as Graham Meadows

Beau Gadsdon as Freya

Nikesh Patel as Ferdy Harwood

Rebecca Gethings as Joan

Éva Magyar as Dolly Langdon

Jay Simpson as Slyfield

Jacob James Beswick as Robbie

Nicholas Bishop as Richard Pugh

Albie Marber as Lennie

Debra Gillett as Mrs. Keefe

Jake Neads as Flamineo

Griffin Stevens as Lodovico

Joe Coen as Brachiano

Oliver Shaw as Rowan

Avye Leventis as Lizzie

Tom Padley as Police Officer

Ed Madden as Ivan Franklin

Jasper Britton as Gideon Lambert

Pearce Quigley as Mr. Morrisey

Nick Moss as Blackshirt

Tom Rouvray as Giovanni

Louis Pieris as Doctor Julio

Aisling Longshaw as Cornelia

Magnus Gordon as Gasparo

Eleanor Wyld as Isabella / Viola

Shanika Ocean as Zanche

Ross Armstrong as Oswald Mosley (uncredited)

Cara Ballingall as Daphne (uncredited)

Grant Crookes as Critic (uncredited)

Libbi Fox as Diana Guinness (uncredited)

Ty Hurley as Private Members Club / Bar Patron (uncredited)

James McNicholas as Hospital PC (uncredited)

David Thrower as Cafe Owner (uncredited)

Paul Warwick as Distinguished Gentleman (uncredited)