Blair wanted 50% to go to unis, which meant more people overall had a degree. Therefore employers could demand a degree where in reality it's irrelevant to the job. But that ship has sailed now, so unless you are going into a trade, even the most basic jobs now are requesting a degree.
The tuition hike and a population lull in 18 year olds, plus COL put students off going, while universities were facing increased costs, wages, energy, pensions, etc so universities started relying on overseas students to top up what was missing in their income. Then the visa changes meant that post grads couldn't bring their family or partner to with them, so unsurpringly overseas students chose elsewhere to study, causing a huge gap in uni finances.
I don't think the extra 250 per year is going to make much difference. If fees had kept up with inflation they'd be closer to 15k a year, plus maintenance loans.
Sad as it is, I think some of the lower performing unis will need to close. I just don't see what else is going to happen long term.