Linus Roache Earl of Manton Actor Geraldine Somerville Louisa, Countess of Manton Actor Perdita Weeks Lady Georgina Grex Actor Lyndsey Marshal Watson Actor Lee Ross Barnes Actor Glen Blackhall Paolo Sandrini Actor Antonio Magro Mario Sandrini Actor Jenna Coleman Annie Desmond Actor David Calder Captain Smith Actor Steven Waddington Second Officer Lightoller Actor Brian McCardie First Officer Murdoch Actor Toby Jones John Batley Actor Maria Doyle Kennedy Muriel Batley Actor Dragos Bucur Peter Lubov Actor Peter McDonald Jim McDonald Actor Ruth Bradley Mary Maloney Actor Georgia McCutcheon Theresa Maloney Actor Stephen Campbell Moore Thomas Andrews Actor James Wilby Bruce Ismay Actor Noah Reid Harry Widener Actor Diana Kent Eleanor Widener Actor Celia Imrie Grace Rushton Actor Simon Paisley Day Sir Cosmo Duff Gordon Actor Linda Kash Margaret "Molly" Brown Actor David Eisner Benjamin Guggenheim Actor Sophie Winkleman Dorothy Gibson Actor Mark Lewis Jones David Evans Actor Sylvestra Le Touzel Lady Duff Gordon Actor Joséphine de La Baume Madame Aubart Actor Simon Vaughan Executive Producer Kate Bartlett Executive Producer Jennifer Kawaja Executive Producer Julia Sereny Executive Producer Howard Ellis Executive Producer Adam Goodman Executive Producer Julian Fellowes Writer Jon Jones Director