C. G. Seligman and F. G. Parsons, via Wikimedia Commons
The Cheddar Man, who was the first full skeleton found in the UK, was located in Cheddar Gorge and is believed to be from around 8,000 BC. Based upon DNA analysis decribed in a Channel 4 documentary, Cheddar Man had blue eyes, black hair and black skin and he would have been able to travel over while England was still atttached to the Europe.
garethwiscombe, via Wikimedia Commons
Stonehenge was built in stages. It was started around 3,000 BC and the inner circle was built in around 2,500 BC. There is still uncertainty as to why it was built, but the best educated hypothesis is that it was used as a burial site.
CADW / Visit Wales, via Wikimedia Commons
Hillforts started to appear throughout Britian around 800 BC, during the late Bronze age. Hillforts were earth works used to defend settlements.
Ptolemy, via Wikimedia Commons
Pytheas, a Greek Explorer, is said to have circumnavigated Britain. He described the British inhabitants as being peaceful farmers who were able in war. It is also believed that Pytheas may have been the first person to use the word Britian.
Unknown author, via Wikimedia Commons
Roman General Gius Julius Caesar second invasion of Britian. Caesar was said to have invaded the British because he they were assisting the Gauls in Brittany. Caesar battled Catuvellauni in what is known as the Gallic Wars and reteated back to Europe to battle a Gaul insurgence. He never returned.
PHGCOM, via Wikimedia Commons
Cunobeline becaomes King of the Catuvellauni people and starts to expand his territory through war. Cunobeline dies after 30 years of rule.
my work, via Wikimedia Commons
Rome's invasion of Britian started in 43 AD with Emporer Claudius.