How Christianised was Britannia circa 400AD?

by The_Manchurian

I know there were Christians in Britannia, and that by 400 it was the state religion, but how many people were actually practicing Christians, and how many were still (Hellenic, I assume) Pagans?

By Britannia I mean the Roman province specifically, not the isle of Great Britain (though if anyone does know about the religions of the Picts I'd be interested!).

Searocksandtrees

Hi, you may be interested in these earlier related posts

What was the transition to Christianity like in Britain? How long did paganism persist, and what was the nature of the early missionaries?
What were the spiritual beliefs of the Anglo-Saxons before the spread of Christianity? much later than 400AD, but gives some indication of the belief systems of the non-Anglo-Saxon Britons.