55 BC BC – Julius Caesar crossed the Channel with about 10,000 soldiers. They landed on a beach in Deal and were hit by a British force. Caesar had to retire.
54 BC Caesar crossed the Channel with 27,000 infantrymen and cavalry. Again they landed on a deal, but were without opposition. They marched inland and after hard fighting they defeated the British and made themselves important tribal leaders.
However, later that year Caesar had to return to Gaul to solve problems and the Romans left.
54BC – 43BC – Although no Romans were present in Britain during these years, their influence increased through trade relations.
43AD – A Roman force of 40,000, led by Aulus Plautius, landed in Kent and assumed the southeast. Emperor Claudius arrived in Colchester with reinforcements. Claudius appointed Plautius Governor of Great Britain and returned to Rome.
In 43 AD, a Roman force (artist's picture) landed of 40,000 Aulus Plautius in Kent and moved to the southeast. Emperor Claudius then arrived with reinforcements in Colchester
47AD – Londinium (London) was founded and Britain was declared a Roman Empire. Road networks were built throughout the country.
75 – 77AD – The Romans defeated the last reluctant tribes and made the whole of Britain a Roman. Many Britons adopted Roman customs and laws.
122 AD – Emperor Hadrian ordered to build a wall between England and Scotland to keep out Scottish tribes.
312AD – Emperor Constantine made Christianity legal throughout the Roman Empire.
228AD – The Romans were attacked by barbarian tribes and soldiers stationed in the country were recalled to Rome.
410AD – All Romans were recalled to Rome, and Emperor Awesome told the British they had no connection to Rome.
Source: History on the Net