Toby Jones

as Philip Burton

Lesley Manville

as Ma Smith

Harry Lawtey

as Richard Jenkins Jr.

Aimee-Ffion Edwards

as Cecilia 'Cis' Jenkins

Aneurin Barnard

as Eifed James

Steffan Rhodri

as Dic Jenkins

Mali O'Donnell

as Phyllis Dolan

Alfie Llewellyn

as Evans