Guest Stars Seline Hizli as Margaret Ward Lorne MacFadyen as DC Phil Wilkinson Tom Austen as Guy Hopkins Neil Morrissey as Harding Redmond Claudie Blakley as Agatha Redmond Sam Frenchum as Gary Bell Helen Clyro as Phyllis Bell Tim McMullan as Professor Raban Lourdes Faberes as Mya Lyall Matthew Tennyson as Kit Bartlett Nicky Henson as Frank Archer Josh Bolt as Rory Crompton Nigel Planer as Giles Montgomery Lea Jackson as Lisa Lisa Diveney as Agent Rollinson David Moorst as Lankester Becky Bullman as Suzy Isabella Marshall as Theresa Rob Oldfield as Valentine Lyall