Guest Stars Kevin Eldon as Mr. Hankins Isobel Hawkridge as Alicia Parker Molly Bishop as Jenny Parker Isaac Vincent-Norgate as Henry Parker Adrian Scarborough as Dr Fuchs Sophie Winkleman as Lady Susan de Clemente Elizabeth Berrington as Mrs. Griffiths Rob Jarvis as Old Stringer James Atherton as Fred Robinson Ruth Kearney as Eliza Campion