Guest Stars Ralph Ineson as Steward Hart Diana Kent as Eleanor Widener Miles Richardson as John Jacob Astor IV Péter Kõszegi as George Widener Larina Mészáros as Loraine Allison Angéla Eke as Madeleine Astor Cian Barry as Fourth Officer Boxhall Olivia Darnley as Bessie Allison Lloyd Hutchinson as Chief Steward Lattimer Simon Paisley Day as Sir Cosmo Duff-Gordon Ifan Meredith as Fifth Officer Lowe Georgia McCutcheon as Theresa Maloney Shane Attwooll as Billy Blake Matt Devere as Boilerman Sally Bankes as Mrs. Gibson Jonathan Howard as Sixth Officer James Moody John Kazek as Steward Turnbull Gráinne Keenan as Laura Francatelli Tom Andrews as Seaman Hawkins Joseph May as Giglio Sophie Rundle as Roberta Maioni Christine Kavanagh as Marian Thayer Joséphine De La Baume as Madame Aubart Beatrice Zentai as Woman 1 at Purser's Eszter Zakariás as Woman 2 at Purser's Thomas Aldridge as Steward Taylor Ryan Hawley as Jack Thayer Pandora Colin as Countess of Rothes Laurie Hagen as Emma Sagesser Tim Downie as Policeman Geoffrey Thomas as American Valet Michele Moran as Prostitute Kevin Lukács as American Valet Csongor Veér as Band Leader Mátyás Ölveti as Cellist Izabella Urbanowicz as Alice Cleaver