The History of Britain: From Ancient Settlements to the Iron Age
By 4000 BC: land farmed + settlements
About 2500 BC: megalithic monuments built, for example, Stonhenge.
Many theories, no certainties about it.
500 BC: The Celts have settled from Europe and Iron Age culture begins to bloom. The Celts give Britain its first name: Albion, derived from a Celtic word for white (Cliffs of Dover).