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