Guest Stars Geraint Lewis as Dr. Haydn Blake Geraint Morgan as Iwan Thomas Gwenno Hodgkins as Elen Prosser Iestyn Jones as Huw Latimer Bradley Freegard as Craig Jones Ella Peel as Ffion Bowen Oliver Ryan as Aron Bowen Helen Griffin as Annes Bowen Jâms Thomas as Cal Bowen Catrin Mara as Delyth Bowen Elijah Dyer as Young Aron Brandon Cooper as Young Cal Glan Davies as Will Watkins