My own experience is in London and Cambridge.

I think your intuitions are steering you wrong if you'd expect this kind of thing among the "undereducated" (your word). That might be true in the US, but in Britain most people from those social echelons simply don't attend church, and haven't for generations, as an effect of urbanisation. Of course, there are relatively poor and uneducated people with that relation to religion in the Black Country, but they aren't Christians.

If you want to find devout Christians, you need to find educated, middle class, small-c conservative types - HTB and the like aren't filled with manual workers. Or else, recent immigrants - but they don't normally attend CoE churches.