It was in A.D. 43 that the Emperor Claudius decided to undertake the actual conquest of Britain
With the knowledge of Caesar's experiences behind him, Claudius did not underestimate the difficulty of the task.
Accordingly, an army of 40,000 men was sent to Britain and within three years the Romans had subjugated the tribes of the central and southeastern regions.
Later campaigns soon brought almost all of what is now England under Roman rule. The progress of Roman control was not without interruptions.