Julius Caesar crossed the Channel with a force of around 10,000 soldiers. They landed on the beach at Deal and were met by a force of Britons. The Romans eventually took the beach and waited for cavalry back up to arrive from France. However, a storm prevented the back up force from reaching Britain and Caesar had to withdraw.

Julius Caesar crossed the Channel with a force of around 27,000 infantry and cavalry. They landed again at Deal and were unopposed - the Britons had retreated to higher ground. The Romans marched inland and met a large force of Britons led by Cassivellaunus north of the River Thames. After a hard battle the Romans defeated the Britons and some tribal leaders surrendered to the Romans. Cassivellanus ordered crops to be burned and made guerrilla attacks on Roman forces.  But the Romans were too strong and Cassivellanus was forced to surrender. In September Caesar was forced to return to Gaul (France) to deal with problems there and the Romans left Britain.

Although not present in Britain, the influence of the Romans increased due to trade links

A Roman force of about 40,000 led by Aulus Plautius landed in Kent. They defeated a force of Britons led by Caratacus and began taking the South-East of Britain. Caratacus escaped and fled to Wales where he set up a resistance base.

The Roman emperor Claudius arrived in Britain with reinforcements. Colchester (Camulodunum) was taken and eleven tribal Kings surrendered to the Romans. Claudius appointed Aulus Plautius Governor of Britain before returning to Rome.

The Romans continued their conquest and by 47AD had conquered the whole of South Britain and claimed Britain as part of the Roman Empire.

London (Londinium) was founded and a bridge built across the river Thames. A network of roads was built across the south of Britain.