Guest Stars Rachael Stirling as Rebekah Chaban Emma Cunniffe as Cassie Lyall Kevin Eldon as Roy Colin Tomiwa Edun as Greg Milton-Elwes Ella Gilling as Kitty Collin Sheyi Ryane as Benoit's Solicitor Jonny Phillips as Gulliver Bauer Jack Ashton as Toby Hansard Félicien Juttner as Benoit Chaban Samuel Holmes as Chris Milton-Elwes