Invasions in the UK

Celtic Tribes

600 BCE

Before the Romans arrived, Britain consisted of a patchwork of tribal areas, each with its own king. Life was hard for the Celtic tribes. They were mainly farmrs who grew, gathered or hunted for their own food. They were also fierce warriors who were often at war with each other. The small tribes of Brythonic Celts grew over the years into larger tribes with their own distinctive identities and living in their own special regions throughout Britain. Each tribe had its own name.

Roman Invasion

43

In 43 A.D, Emperor Claudius organised the final and successful Roman invasion of Britain. General Aulus Plautius led four legions with 25,000 men, plus an equal number of auxiliary soldiers. They crossed the Channel in three divisions, landing at Richborough, Dover, and Lympne.
After the conquest was finished, they brought many changes to the culture e.g: the architecture, the coinage, urbanization etc. https://www.youtube.com/watch?v=DNE4zE40kYM

Germanic Tribes

450

The invasions took place after the last Roman garison withdrew from Britain (407 AD) abd was largely accomplished by the time St Augustine arrived (end of the 6th century). The Germaniv invasions significantly changed the democraphic and ethnic pattern of Britain, especially what we now call England. The make up of the population, language, political structure, and other institutions were fundamentally changed.

Viking Invasion

793

In 793 came the first recorded Viking raid. These ruthless pirates continued to make regular raids around the coasts of England, looting treasure and other goods, and capturing people as slaves. Monasteries were often targeted, for their precious silver or gold chalices, plates, bowls and crucifixes.
From around 860AD onwards, Vikings stayed, settled and prospered in Britain, becoming part of the mix of people who today make up the British nation

The Normans Invasion

1066

Norman Conquest, the military conquest of England by William, duke of Normandy, primarily effected by his decisive victory at the Battle of Hastings (October 14, 1066) and resulting ultimately in profound political, administrative, and social changes in the British Isles.