The original aborigines of Great Britain were the Phoenicians who arrived there around 3000 BC. The inhabitants of Cornwall and Wales are one of the few of the remaining Phoenician descendants. Also, the language of Wales is kinda similar to Hebrew. The Phoenician language is where Hebrew was derived from.
A second tribe to inhabit Britain were the Iberians from Spain. Another people were the Etruscans, a tribe descended from the Trojans, led by Brutus, who gave Britain its name. They were the ones who founded the city of London. Around that time, the Pict settled in Scotland. Then, the Celts from Gaul (France) and Belgium started piling in. The Romans, the Anglo-Saxons, the Vikings, and finally the Normans.