| 209 | St Alban - the martyrdrom at Verulamium |
| 339 | Constantine moves the imperial capital to Byzantium |
| 367 | attacks by Picts, Scots, Saxons - rescue expedition from Rome |
| 391 | Christianity becomes the sole religion of the Empire |
| 396 | barbarian attacks - rescue expedition from Rome |
| 402 | British garrison evacuated to fight visigoths in the Italy |
| 406 | invasion of Gaul by Vandals, Suevi and Alans - - Britannia effly cut off from imperial assistance |
| heptarchy | Northumbria, Mercia, East Anglia, Kent, Essex, Wessex, Sussex |
| 597 | Athelbert, King of Kent, converted to Christianity |
| 664 | the Synod of Whitby : Irish Church vs. Roman Church |
| Offa | the first to call himself Rex Anglorum |
| 789 | Portland in Dorset : the first recorded "Viking" landing |
| 793 | the first recorder raid on Lindisfarne/Holy Island |
| 871 | Dannish invasion on Wessex : Alfred The Great becomes a king |
| 886 | treaty of Wedmore : Danelaw |
| 973 | Edgar coronated as the king of England |
| 1014 | the end of Viking wars : Clontarf (Brian Boru's death) |