Guest Stars Patrick Walshe McBride as Sebastian Brudenell Amber Aga as DI Christina Marlowe Roberta Taylor as Gloria Fonteyn Ciaran Griffiths as William 'Billy the Brick' Porters Polly Maberly as Victoria Cathness Marjorie Yates as Edie Grimes Simon Manyonda as Moses Abiola Isabella Marshall as Freya Elstob