Michael SheenStage Manager Rithvik AndugulaHowie Newsome Aisha-May HunteWally Webb Rebecca KillickRebecca Gibbs Alfie LlewellynJoe Crowell / Si Crowell Christina ModestouMrs. Soames Yasemin ÖzdemirEmily Webb Sian Reese-WilliamsMrs. Gibbs Gareth SnookProfessor Willard / Joe Stoddard Matthew TrevannionDr. Gibbs Rhys WarringtonSimon Stimson Jâms ThomasConstable Warren Francesca GoodridgeDirector Pádraig CusackExecutive Producer Dena DaviesAssistant Director Russell T DaviesExecutive Consultant Sam JonesCasting Director 
