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