Guest Stars Ralph Ineson as Steward Hart Simon Paisley Day as Sir Cosmo Duff-Gordon Diana Kent as Eleanor Widener Ifan Meredith as Fifth Officer Lowe Miles Richardson as John Jacob Astor IV Larina Mészáros as Loraine Allison Péter Kõszegi as George Widener Angéla Eke as Madeleine Astor Cian Barry as Fourth Officer Boxhall Olivia Darnley as Bessie Allison Lloyd Hutchinson as Chief Steward Lattimer Georgia McCutcheon as Theresa Maloney Jonathan Howard as Sixth Officer James Moody Joseph May as Giglio Ben Bishop as Stoker Lyons Tom Andrews as Seaman Hawkins Sally Bankes as Mrs. Gibson Gráinne Keenan as Laura Francatelli Sophie Rundle as Roberta Maioni Will Keen as Chief Officer Wilde Pandora Colin as Countess of Rothes Ryan Hawley as Jack Thayer Christine Kavanagh as Marian Thayer Laurie Hagen as Emma Sagesser Thomas Aldridge as Steward Taylor Joséphine De La Baume as Madame Aubart Istvan Koncz as Gatti's Waiter Attila Bardóczy as Gatti's Waiter Luke Norris as Seaman Holmes Richard Southgate as Youth with Jack Lili Horvath as Woman 1 in Lifeboat Margaréta Szabó as Woman 2 in Lifeboat Dave Legeno as Seaman Davis
