In this four-part documentary which follows the BBCs A History of Ancient Britain, TV historian and archaeologist Neil Oliver (Coast, A History Of Scotland) continues his landmark investigation of how Britain and its peoples came to be.

This is an epic exploration of the Celtic and Roman ages, telling the amazing story of the technical, cultural and political revolutions which formed Britain. Oliver visits amazing sites, works with top experimental archaeologists, and marvels at wonders created two millennia ago.

The series tells the story of a developing nation, from a population of self-sufficient farmers in 500BC through the Iron Age, the druids and the Roman conquest, and addresses one of the greatest mysteries of history: who, what and where were the Celts?