Guest Stars Fiona Dolman as Sarah Barnaby Manjinder Virk as Dr. Kam Karimore Cherie Lunghi as Alexandra Monkford Saskia Reeves as Summer Pitt Cara Horgan as Rachel Monkford Ramon Tikaram as Lance Auden David Bamber as Daniel Fargo Adrian Scarborough as Tony Pitt Charlotte Beaumont as Helena Pitt Michael Wildman as Killion Staples Denis Lill as Simeon Rowling David Gant as Brandon Monkford John Hollingworth as Brin Dunne Cat Simmons as Clemmy Staples Jolyon Coy as Fabian Monkford