This Roman Britain timeline looks at the events in Britain from the time the Romans first invaded it to the aftermath of the departure of Roman troops from Britain.
- 55 BC Julius Caesar's first invasion of Britain
- 54 BC Julius Caesar's Second invasion of Britain
- 5 AD Rome acknowledges Cymbeline king of Britain
- 43 AD Under Emperor Claudius, Romans invade: Caratacus leads the resistance
- 51 AD Caratacus is defeated, captured and taken to Rome
- 61 AD Boudicca, Queen of the Iceni rebels against Britain, but is defeated
- 63 AD Joseph of Arimathea's mission to Glastonbury
- 75-77 AD Rome's conquest of Britain is complete: Julius Agricola is Britain's Imperial Governor
- 80 AD Agricola invades Albion
- 122 AD Construction of Hadrian's Wall on the northern frontier
- 133 AD Julius Severus, Governor of Britain is sent to Palestine to fight rebels
- 184 AD Lucius Artorius Castus, the commander of the conscript troops in Britain leads them to Gaul
- 197 AD Clodius Albinus, Governor of Britain is killed by Severus in battle
- 208 AD Severus repairs Hadrian's Wall
- 287 AD Revolt by Carausius, commander of the Roman British fleet; He rules as emperor
- 293 AD Carausius is killed by Allectus, a fellow rebel
- 306 AD Constantine is proclaimed emperor at York
- 360's Series of attacks on Britain from the North from Picts, Scots (Irish), and Attacotti: Roman generals intervene
- 369 AD Roman general Theodosius drives out the Picts and Scots
- 383 AD Magnus Maximus (a Spaniard) is made emperor in Britain by the Roman troops: He leads his troops to conquer Gaul, Spain, and Italy
- 388 AD Maximus occupies Rome: Theodosius has Maximus beheaded
- 396 AD Stilicho, a Roman general and the acting regent, transfers military authority from Rome to Britain
- 397 AD Stilicho repels a Pictish, Irish and Saxon attack on Britain
- 402 AD Stilicho recalls a British legion to help with fighting at home
- 405 AD The British troops stay to fight another barbarian invasion of Italy
- 406 AD Suevi, Alans, Vandals and Burgundians attack Gaul, and break contact between Rome and Britain: Remaining Roman army in Britain mutinies
- 407 AD Constantine III named emperor by Roman troops in Britain: He withdraws the remaining Roman legion, the Second Augusta, to take it to Gaul
- 408 AD Devastating attacks by the Picts, Scots and Saxons
- 409 AD Britons expel Roman officials and fight for themselves
- 410 AD Britain is independent
- c 438 AD Ambrosius Aurelianus probably born
- c 440-50 AD Civil war and famine in Britain; Pictish invasions: Many towns and cities are in ruins.
