Guest Stars Alistair Petrie as Geoff Ruth Gemmell as Jen Paul Ready as Lee Anna Madeley as Anya James Fox as Assistant Stephen Rea as Letts Eleanor Matsuura as Bev Gerard Monaco as Joe Sarah Churm as Grant's Mom Paapa Essiedu as Roy Dan Tetsell as Headteacher Mark Stobbart as Bejan Simon Farnaby as Marcus Michael Smiley as Reynolds Hermione Gulliford as Diane Danny Kirrane as Clerk Joshua James as Teenager Gavin Spokes as Large Man Stewart Scudamore as Milton Wilson Oliver Dimsdale as Greg Andrew Readman as Lawyer Gary Cargill as Detective Leeman