My initial source was a teacher I know who happened to have been in the profession before, during and after New Labour's tenure, but I've found
this page that reveals Critical thinking was an AS level option until 2014 (as I did my A-Levels in 2012-14 I remember it being around as well but I didn't study it then). Apparently it's also embedded into the International Baccalaureate, but again not everyone does that.
Thanks! That certainly seems like progress to me. But as you say in your previous post, an AS level subject would have minimal impact as so few people would end up studying it.
by the same logic it could be argued certain businesses/corporations would rather the population didn't learn it, as more people would resist their marketing tricks/advertising and thus not buy their products as much/at all.
That seems implausible to me. In order to think that way, the people running those businesses would have to actually believe that they are themselves using misleading marketing to sell poor goods, and therefore - in effect, believe that they are con artists. While that will be true of a few business people, in practice that's going to be a tiny minority of businesses. I'd say what tends to happen much more is, people get fooled by their own marketing hype etc. and so they believe they are being ethical when they aren't. (One obvious example I can think of is the health supplement industry - full of claims of dubious scientific value, pushing products that are probably ineffective, but everyone I've known who's got into that industry has - so far as I can tell - actually believed that their products were great). If you genuinely believe that your products are good then, even if you're mistaken, you're probably not going to feel threatened by the prospect of people learning critical thinking - at least until it's too late and you find a new generation of people are actually questioning your products
I'd expect rather that the vast majority of businesses would think something more like,
Critical thinking? That means our staff will be able to make better decisions so we'll end up even more profitable! [*]
Yay! Let's do it!
( [*] They won't of course - because their competitors' staff will also make better decisions, so the competition will get stiffer. But when you haven't been taught critical thinking, it's easy not to notice those biases that make you think you're the best

)