Congratulations on your offer to study UPC at UCL!
1. I finished most of my courses face-to-face. So unfortunately I can’t give you a full review of online UPC courses. As far as I am concerned, the online courses were quite disappointing tbh. For maths, we had audio powerpoints on a weekly basis. Maths tutorials were basically cancelled. Instead, we sent emails asking questions. Econ teachers are not familiar with technology, so much time was wasted on adjusting computer. However, I am not sure about UPCSC. But from my friends from UPCSC, they didn’t have a pleasant experience either. However, this is quite normal given that the pandemic stroke everyone unexpectedly in the UK. Maybe when you start your course, UPC teaching staff will have adapted to the teaching environment and formulated a more reasonable plan.
2. Going to Oxbridge is extremely rare, but it is possible. At the start of UPC, there will be an event for Oxbridge aspirants. However, I don’t know anyone who got into Oxbridge through this course. No one got into Oxbridge this year.