Key Dates: Early Britain Timeline

Key dates in Early British history: c. 4000 BC – First farmers arrive; c. 2500 BC – Stonehenge construction begins; 55 BC – Julius Caesar's first invasion; AD 43 – Roman conquest under Claudius; c. AD 120 – Hadrian's Wall built; c. AD 410 – Romans leave Britain; AD 597 – St Augustine arrives in Canterbury; AD 789 – First Viking raids.