Guest Stars Faye Marsay as Joanne Aspinall Steven Cree as Joe Kallisto Rico Canadinhas as Fergus Riverty Alastair Mackenzie as Guy Riverty Nell Williams as Sally Kallisto Indeyarna Donaldson-Holness as Lucinda Riverty Leo Ashton as Sam Kallisto Macy Shackleton as Abby Hill Matthew Aubrey as Wayne Jake Hayes as James Kallisto Nicola Duffett as Jackie Naomi Yang as Miss King Danny Ashok as Junior Doctor Oscar Garland as Ryan Tony Fillingham as Delivery Man