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