I guess you might be technically correct with that date being the official cut-off for pre-history, but the Romans who recorded successfully invading in 43 AD also recorded unsuccessful invasion attempts in 55 and 54 BC, so it's not entirely true to say that's the start of British recorded history.

I also think it's funny that Schama's History of Britain Volume 1 is titled "3000 BC - AD 1603" and yet only has 6 pages of information for before 55 BC, and certainly nothing specific date-wise that would justify choosing 3000 BC over any other random year.

I knew I would be called on that, lol. You're correct.

I think I initially was going to write paleo/mesolithic but couldn't remember how to spell mesolithic.