Guest Stars Patrick Walshe McBride as Sebastian Brudenell Amber Aga as DI Christina Marlowe Fern Deacon as Lily Rattle Chance Perdomo as Hamish Kingly Chizzy Akudolu as Sandra Kingly Paul Thornley as Rex Olson Malcolm Atobrah as Uzoma Oladapo Jo-Anne Knowles as Polly Rattle Henry Johnson as Young Hamish