Dan Stevens as Thomas Richardson

Michael Sheen as Malcolm Howe

Lucy Boynton as Andrea

Mark Lewis Jones as Quinn

Bill Milner as Jeremy

Kristine Froseth as Ffion

Paul Higgins as Frank

Richard Elfyn as Charles

Catrin Aaron as Elaine

John Weldon as Lonely Passenger

Ross O'Hennessy as Suspicious Passenger

Gareth Pierce as Man #1

Rhys Meredith as Man #2

John Norton as Man #3

Ioan Hefin as Bell Ringer

Rhian Morgan as Inn Keeper

Owain Gwynn as Townsman

Sharon Morgan as Her

Sebastian McCheyne as The Grinder

Gareth John Bale as Bar Keeper

Elen Rhys as Jennifer

Spencer Booth as Townsmen Guard

Toby Brierley as Townsmen Guard

Alekss Dudins as Townsmen Guard

Michael Gleeson as Townsmen Guard

Paul James as Townsmen Guard

Craig Jenkins as Townsmen Guard

Lex Lamprey as Townsmen Guard

Daryl Matthews as Townsmen Guard

Stuart McNeil as Townsmen Guard

Dan Ward as Townsmen Guard

Rhys Wilton as Townsmen Guard

Fergus Dignam as Doctor

Helena Dennis as New Arrival (uncredited)

Annes Elwy as Sinead (uncredited)

Juke Hardy as Harry's Guard (uncredited)

Samantha E. Hunt as Samantha Howe (uncredited)

Pino Maiello as New Arrival (uncredited)

Phillip Roy as New Arrival (uncredited)