Sophie Okonedo (right, centre) joins the main cast of Britannia as the wife of General Aulus Plautius
Shot through with a gleeful hallucinatory quality that’s hard to resist, Britannia imagines life as it may have played out in the years following the Roman invasion of Britain in AD 43. To judge by a show co-created by acclaimed playwright Jez Butterworth, this was a time when Britain was in a state of flux.