Prehistoric Britain timeline

Swinside, stone circle, CumbriaHere is a timeline for Britain before the Romans, from the earliest human presence and the arrival of Homo Sapiens.

WHEN WHAT
c950,000BC Earliest human presence in Britain
c23,000BC Arrival of Homo Sapiens
c12-10,000BC Permanent human settlement begins
c8,000-6,000BC Last Ice Age ends in Europe
c6,000BC Last land bridge disappears, separating Britain from the rest of Europe
c4,000-2,500BC The Neolithic period – the first farmers, possibly arrivals from the east – ‘the Beaker People’. Early enclosures and burial chambers. Later Neolithic period sees the construction of henges and stone circles
c3,000BC Stonehenge begun
c2,500-750BC The Bronze Age – round barrows (burial chambers), villages and the first hill forts are built
c1,200BC Construction of roundhouses
c750BC The Iron Age. The arrival of the Celts, probably in waves.  Hill forts are a typical feature of settlement
c500BC Construction of brochs in Scotland
c300BC Somerset lake villages
c100BC Coins are in use
55BC Immediately before the Roman invasion, Britain is peopled by a number of different tribes. These include the Durotriges in modern Dorset/Wiltshire, the Atrebates in parts of Sussex, Hampshire and Berkshire, the Iceni in Norfolk and Suffolk, the Brigantes in Yorkshire, Durham and Lancashire, the Votadini in south east Scotland, the Caledones in the Highlands and the Picts in north east Scotland.
55 and 54BC Julius Caesar invades southern Britain.  He exacts tributes from the defeated tribes but does not stay.
43AD Full-scale Roman conquest of Britain begins