And therein lies the issue what is the proportion of Northerners getting 'perfect A levels' compared to their Southern counterparts?
@mids2019 as a PP said there's definitely an issue with low aspirations etc but this is due to poverty, Not location. Is a 'poor Londoner' , in a low aspiration environment more likely to get to Cambridge than a 'poor Northerner'?
Also, this is just my pet theory with zero scientific basis. But 'ambitious' people, the ones who want to earn well, push their children to do well, aim high etc tend to be concentrated in London. Before Covid and remote work there was a clear, major gulf of opportunity between London/the SE and the rest of the country. There still is, but remote work improved it slightly, although that remains to be seen.
I'm not from the UK, went to a top London uni. Couldn't be arsed with the rat race so left for the North West. My 'average' London salary bought me and DH a nice big house with garden and driveway 25 mins drive away from the city centre with 'decent' ( for outside London) public transport. Trains to London 2+ hours if I want (if they're not delayed!). Manageable mortgage. For the same in London I'd need promotions, pay rises and even then we'd need to be working full time till retirement which I didn't really want.
People here don't really seem to academically ambitious to the point of grinding for top universities. When I first came here I transferred from my big London MNC and most people at the top came from very ordinary universities. Didn't get perfect A-level results but doing well for themselves.
I think, from here. If you go to Oxbridge you're extremely academic. In London/SE, there's a culture of prepping to get in as a PP said. It's sort of 'expected'. Just like some families expect their kids to go to uni and some aren't at all.
If selection was purely on the basis of raw intelligence it would be more even.