Guest Stars Patrick Walshe McBride as Sebastian Brudenell Tomos Eames as DS Joe Keeler Amber Aga as DI Christina Marlowe Asheq Akhtar as Ajay Matharu Julia Deakin as Genevieve Shakespeare Abi McLoughlin as Diane Melanie Gutteridge as Veronica Vinten Nigel Whitmey as Clive Brenton Nia Gwynne as Janice Bardolph Quinn Patrick as Wedding Registrar Anthony Adjekum as Duane Tatsu Carvalho as Thiago Cabrera Rob Leetham as Jack Amey Woodhall as Stacey