Guest Stars Nina Toussaint-White as Lucy Damien Molony as Jon Caroline Ginty as Caroline Dustin Demri-Burns as Simon Karl Theobald as Therapist Dylan Edwards as Billy Francis Magee as Dad Llewella Gideon as Linda Eliot Salt as Frances Alfie Brown as Mark Naana Agyei-Ampadu as Sally Georgie Glen as Pam Clive Hayward as Husband Ben Rufus Green as Dog Owner