[Cowboy Bob]

"They date from precisely the time when Britain emerged from prehistoric to historic times," she said.

Recorded history only began 2000 years ago? The Greeks and the Egyptians are considered prehistoric civilizations?

[SunkenCiv]

Brtain, not Egypt or Greece — prehistoric means, before writing.

I’d have quibbled with this because Celtic Ogham was quite clearly in use before the Romans got to Britain.