Guest Stars Faye Marsay as Joanne Aspinall Alastair Mackenzie as Guy Riverty Rico Canadinhas as Fergus Riverty Steven Cree as Joe Kallisto Nell Williams as Sally Kallisto Indeyarna Donaldson-Holness as Lucinda Riverty Leo Ashton as Sam Kallisto Macy Shackleton as Abby Hill Camilla Marie Beeput as Alexa Charlie Carrick as Winston Hill Gerald Kyd as Scott Elias Jake Hayes as James Kallisto Carl Rice as Pete Toovey Audrie Woodhouse as Louise Elias Dave Cooper as Paramedic