Ruth Wilson Alison Wilson Actor, Executive Producer Iain Glen Alexander Wilson Actor Keeley Hawes Dorothy Wick Actor Anupam Kher Shahbaz Karim Actor Barbara Marten Mrs McKelvie Actor Patrick Kennedy Dennis Wilson Actor Ian McElhinney Father Timothy Actor Calam Lynch Gordon Wilson Actor Otto Farrant Nigel Wilson Actor Joy Richardson Olive Actor Fiona Shaw Coleman Actor Sophie Harkness Nurse Andrews Actor Conor Grimes Prison Officer Actor Serena Manteghi Poppy Actor Dave Hill Landlord Actor Alan Turkington Policeman Actor Gemma McElhinney Elizabeth Actor Alex Blake Undertaker Actor Joseph Mydell Bert Actor Richard Croxford Father Nicholas Actor Anna Symon Writer Jackie Larkin Producer Richard Laxton Director Ruth Kenley-Letts Executive Producer Neil Blair Executive Producer