Applying for university at 16

I’m already working as a part-time tutor, and independent travel is something my parents would never allow me to do (and I’m not comfortable either). I don’t drink due to my religion and I’ve always been introverted (not really having a social circle). I’ve already got a legal guardian and have accommodation near the universities. Is there anything else you can suggest? I don’t want to just take a break, I want to utilise my time. Or perhaps give some advise on how to approach entering university at a young age?

My son turned 16 recently. Last year, at the age of 15, he applied to Cambridge and Imperial universities. At that time, he had 10 GCSEs and one A-level in Maths. This summer, he took three more A-level exams. He received an offer from Imperial but was rejected by Cambridge (Natural Sciences) after passing the entrance test and undergoing three interviews.
Cambridge, being a more traditional institution, has stricter age requirements. Out of 31 colleges, only five responded, stating they would allow him to sit the exam; the others do not accept students under 18. In contrast, Imperial is more flexible and is willing to admit students even under 16, provided that a guardian signs the necessary forms. For specific admission requirements, you need to contact each university department individually.
Good Luck!

Hi, I'm currently 15yrs old (turning 16 in a couple of months) but I'm planning to apply for university for Law next year, ideally Oxford or Cambridge. So far I've got 3 GCSEs, all grade 9, and I'm planning to sit my 3 A-Levels (Law, Classical Civilisation and Literature) next year along with 3-4 GCSEs. I have a few questions:
(1) Ideally, I'd like to sit as little exams as possible due to the costs of being a private candidate, so I was wondering if universities would accept only 5-6 GCSEs?
(2) Would there be any downsides for a 16yrs old applying for university?
(3) I've been homeschooled since Y9, the only extra stuff I've done was debating, and right now, I volunteer at a library while working as an online tutor. Would good grades be enough for applying or is there anything else I should be doing?
(4) I already have relatives willing to provide accommodation for me while I'm at university, but is there a possibility that the university would allow me to use their dorms?
(5) If you think university seems a little early for me, what else could I do instead of going (bearing in mind that I'm academically-driven and like to utilise literally every second)?