Guest Stars Ralph Ineson as Steward Hart Diana Kent as Eleanor Widener Simon Paisley Day as Sir Cosmo Duff-Gordon Georgia McCutcheon as Theresa Maloney Miles Richardson as John Jacob Astor IV Olivia Darnley as Bessie Allison Cian Barry as Fourth Officer Boxhall Angéla Eke as Madeleine Astor Péter Kõszegi as George Widener Ifan Meredith as Fifth Officer Lowe Lloyd Hutchinson as Chief Steward Lattimer Larina Mészáros as Loraine Allison Tom Andrews as Seaman Hawkins Matt Devere as Boilerman Ben Bishop as Stoker Lyons Shane Attwooll as Billy Blake Jonathan Howard as Sixth Officer James Moody John Kazek as Steward Turnbull Gráinne Keenan as Laura Francatelli Mike Kelly as Seaman Royce Alexis Latham as Man in Corridor Istvan Koncz as Gatti's Waiter Attila Bardóczy as Gatti's Waiter Iain McKee as Seaman Scott Szabolcs Thuróczy as Priest Colm Gormley as Winston Churchill Jamie MacPhee as Scots Guards Officer
