Firstly, half the university courses are rubbish, as there is no set difficulty. Unlike Alevels, which are worth the same wherever you do them.
For example: Sports Science. You will end up putting up badminton nets at a leisure centre at best, as there is no money in this field. Similar with English, Social Scienes, Arts etc.
You loose 9% over £15,000 per year to pay back the loan.
Tbh if you do a degree and don't earn at least that then you have wasted your time.
Where you thinking of going, what do you want to study and where do you want to be?
What Alevels do you have?
It is good that you are considering your future rather than thinking go any old degree at any old uni to party hard for 3 years.