There's an article on the Guardian website on this subject - the comments are worth reading too. It concerns Americans, but the phenomenon is wider: Meet the white, middle-class Pinterest moms who believe Plandemic
@MaybeDoctor
Since the late 1960s there has been an increasing movement in Christianity that rejects the traditionally-organised church (ie, with a bishop or moderator responsible for lots of parishes and clergy) in favour of independent 'house' churches. It's a reaction to the decline of Christianity by jettisoning the baggage that those big churches have (I mean CofE, CofS Catholic etc). They're now at the point where they are becoming more influential in Christian circles than those older churches.
The danger in them is that they don't have proper oversight, and the people who run them don't have nearly as much training as the traditional CofE vicar has. Until really very recently it normal for anyone who ran a church to have at least some understanding, for example, of New Testament Greek and the philosophical ideas that were going around at the time (there's a lot of Plato in St Paul for example - trad Christianity borrows hugely from Greek culture). In house churches this is not generally the case, leastways around me, and the result is that the contents of the Bible get taught in a very simplistic sort of way. The classic mistake these churches make is forgetting that the Bible was written in different languages in different times, and it isn't simply a matter of translating it like an Asterix comic. The other classic mistake they make is denying that what is in the Bible was a matter of debate for hundreds of years, and what went in and what stayed out was based on what the Church had decided to believe - and not the other way round. They are actually commiting a simple historical illiteracy.
Concerning the Bible Society, I remember that in my youth they were an entirely mainstream organisation and for them to make a presentation in a school would have been entirely uncontroversial. My mother gave me a Bible published by the Bible Society, as I recall. She is an old-fashioned, sensible, mild-mannered academic type of the sort that one still finds around churches - but now they are all very elderly.
I do not know what they are like now. But I have to say that it is quite normal for ethical views of all sorts to be advocated in schools. I think that's quite proper, within appropriate limits, and as long as it is appropriately taught by knowledgeable people. I don't see that ethical views that involve belief in a divine being should be excluded from this - particularly the case of Christianity, which was the dominant belief system in the UK for one and a half thousand years until only just a few years ago.
In my kids' schools, Christianity isn't given an airing at all, but plenty of other views and beliefs are: they boil down to a querulous, zealous and disjointed pushing of the rights of various identified minority groups and it all looks very shallow to me.
Regarding conspiracy theories generally: I believe that across the West knowlege and ability in the humanities has been in decline for at least two decades. When I read something written 20 or 30 years ago I'm struck by more seriously it is written and argued, and how less likely it is to try and be entertaining. I think a lot of people no longer know how to be serious and who to treat something in a serious way - and that is why they do not recognise when an argument or belief oer a person is not serious and needs to be treated as a joke. I don't think, for example, that someone like Boris Johnson would have become prime minister 20 or 30 years ago. This has happened at the same time as decline in traditional church attendance and I do wonder if that means a moderating influence on people has been lost. However, I think it has a lot more to do with the rise of the Internet and the idea that one can just Google everything. Even my kids' schools teach in this way - they go light on the content because the Internet has the answer, and I understand that is a worldwide teaching trend.
It's very, very depressing. I think that Trump will lose in November but this nonsense won't go away any time soon.