Roman Britain

Portchester Castle in Hampshire was intended as a coastal defence against raiders. (Photo by Getty Images)

Where history happened: the collapse of Roman Britain

Hadrian's Wall photographed at Hotbank Crags and looking towards Crag Lough in Northumberland National Park. (Photo by Roger Coulam/Getty Images)

The Library Apocalypse then circa 410: the end of Roman Britain

A second-century bronze head of Roman Emperor Hadrian

Hadrian: rescuer of the Roman Empire

A Roman auxiliary fort just south of Hadrian's Wall

How Roman was Britain?