Ex student here - my year was sort of rammed full of c*s but it does entirely depend on your year group. Not what it used to be. Beard is a nice guy really, albeit a bit pompous and up his own backside. Unfortunately since joining, as head, he totally reworked the ethos and nature of the school. UCS was never a pushy school like half the other NL private schools. It gave you the opportunity to excel if you put in the effort, but never forced it upon the kids. That's what set it aside from Highgate for example. You get schools like that like KAS and FineArts, but theyre pretty crap tbh for the price - UCS was not crap at all, was very academic but not in a coercive manner. Now it's extremely pushy and academic, with no real margin. However, despite having no room for academic slack, they will mollycoddle to the end of the earth for anything that serves the pathetic new "woke" agenda - I spose they're moving with the status quo of society.
Prepare for constant tests, lots of mandatory homework, lots of relentless double n triple periods of infuriatingly boring science and mathsy bllcks, broken up by cringy callover talks from some charity worker, to help mask the elitist temperament of the joint. 0 tolerance for drug taking, inappropriate student behaviour on the internet, stricter on uniform these days, no sneaking out at lunch for smokes in year 9/10/11... etc. From what I hear of friends' little brothers and that, it's gotten even stricter. There wasn't a lot of bullying back when I was there, but plenty of ruthless banter. A lot of collective teacher abuse from the students, which was evil but terrifically funny. We made a few staff members cry.
Put it this way, I think it used to be more like a very academic 6th form college for anyone in the upper school / university (do what you want but u'd be wasting yer parents money if you didn't put in hard work), and now it's more like a slightly orwellian regime - teachers over your shoulder, head's of year / deme wardens patrolling around waiting to nab you for not tucking ur shirt in or smelling of baccy or pocketing a vape.
It's a decent choice, preferably if ur jewish (theres a real sense of jewish community there) if you've got money, live locally, got a smart / academic / easy going kid who you want to excel and end up at oxbridge. But avoid like the plague if your kids a freak who's gunna get picked on, you're saving up every penny to send your kid there, or if your kid is more on the creative / artsy side of things.