The Romans tucked their tails between their legs and, oh, wait, they ruled Britain for another 349 years (AD 61 to 410).
The Romans built forts all around the Empire; the one known serious uprising in Britain was this Boudiccan revolt, during a period the legions were understrength in Britain due to a problem on a frontier on the continent, and the result of which was the slaughter of a reported 80,000 Celts by about a legion and a half of Roman troops doing what they did best in their most disciplined manner.
The Iceni ceased to exist.
Boudicca poisoned herself.
Hadrian had to builds wall