Guest Stars Sarah Solemani as Lizzie Dawn French as Linda Jordan Long as Len Paul Cawley as Alan Emilia Fox as Scarlett Tom Basden as Noel Stephen Campbell Moore as Smoke David Calder as Mr. Reid Chandeep Uppal as Sabrina Rowena King as Wood Oliver Lansley as Sumner John Warnaby as Ian Culverson Rebecca Front as Cox Duncan Pow as Petr Rufus Jones as D.S. Brick Dan Skinner as D.I. Ireland