Guest Stars Fiona Dolman as Sarah Barnaby Manjinder Virk as Dr. Kam Karimore Neil Morrissey as Mitch McAllister Sara Powell as Maxine Lockston Frances Barber as Ingrid Lockston Vicki Pepperdine as Barbara Walton Clive Swift as Felix Hope Phoebe Campbell as Tara Lockston Joe Sims as Adrian Peck Emilio Doorgasingh as Azeem Meer Sam Troughton as Henry Marsh Marty Cruikshank as Cecily Hope Philip Bird as Duncan Walton Katy Cavanagh as Lena Ferrera James Atherton as Jensen Marsh