Guest Stars Fiona Dolman as Sarah Barnaby Annette Badland as Dr. Fleur Perkins Nicholas Farrell as Isaac Starling Bill Bailey as Darwin Chipping Jemma Redgrave as Dr. Juno Starling Ruby Bentall as Stella Starling Heather Wright as Francesca Lounds Nicholas Burns as Barrett Lounds Ben Caplan as Murray Eccbeer Will Brown as Timothy Argo Elena Saurel as Zennia Lounds Ellen Thomas as Ruth Crane Eloise Joseph as Bluebell Eccbeer Joshua Williams as Jerome Buchanan