Guest Stars Thomas Craig as Fenton Russell Bertie Carvel as Alexander Wentworth David Michaels as Brian Worsley Mark Powley as Mark Venn Peter Guinness as Jason Styles Benjamin Smith as Matt Lisa Kay as Lauren Venn Mark Flitton as Paul Hillman Rupert Simonian as Michael Venn Christov Ruhn as Mezwar Tanzir Paul Ritter as Stevie Quirke Andrew Bicknell as General Sir Adrian Henderson Audrey Looten as Jennifer Moscati Michael Winder as Kevin Gaunt Sharlene Whyte as Lisa Merrick Deborah Sheridan-Taylor as Rebekkah Stone