Imogen Poots as Rose Dugdale

Jack Meade as Eddie Gallagher

Tom Vaughan-Lawlor as Dominic

Lewis Brophy as Martin

Dermot Crowley as Donal

John Kavanagh as Sir Alfred Beit

Andrea Irvine as Lady Beit

Flynn Gray as Patrick

Carrie Crowley as Rose's Mother

Simon Coury as Rose's Father

Vanessa Ifediora as Alice

Patrick Martins as Walter

Martha Breen as Sophie

Molly Rose Lawlor as Lizzie

Conor Lambert as Fisherman

Michael-David McKernan as Micheál

Jude McClean as Child Rose

Paul Ward as Butler

Fionnuala Murphy as Shopkeeper

Alan Howley as News Reporter

Ciaran McMahon as Policeman

Simon Kunz as BBC News Reader

Ciaran McKenna as Albert Price

James Edlin as Boy's Father

Ella Cannon as Comrade

Derek Carroll as Garda / Special Branch

Bernadette Carty as Anne

Damien Donnelly as Garda Special Branch (Black Trench Coat)

Kilmurry Jennifer as Oxford Student

James Sadat as Oxford Union Member