Guest Stars Fiona Dolman as Sarah Barnaby Tamzin Malleson as Dr. Kate Wilding Sharon Small as Ruth Cameron Hayley Mills as Lizzy Thornfield Lucinda Dryzek as Amy Strickland Lucy Akhurst as Camilla Strickland Catherine Bailey as Stephanie Weston Marc Elliott as Nick Iver Tyger Drew-Honey as Ferdy Linklater Clive Wood as Johnny Linklater Matt Kennard as Jamie Weston Neil McCaul as Martin Strickland Arabella Weir as Angela Linklater