The Angles taken to Rome around 200AD.
Cheddar man around 8000BC at the latest. During that 8000 or so years there was plenty of time for people of a different ethnicity to live in this island.
Well, yes. In fact it is now thought the entire male line of Cheddar Man was wiped out by incomers that came from the Ukrainian steppes c. 2000BC, mainly represented by the R1b haplogroup and subclades. Some paleolithic mitochondrial groups do survive such as U5.
