Hey, I did SPC 2022. It was genuinely one of the best experiences ever! We stayed in a Cambridge college, got introductory lectures on quantum mechanics ( following the QMP Primer ), did some fun practicals and made friends who are all really interested by physics. If you can apply, I would say 100% to go for it, I am so glad that I did. I ended up doing around 570 Isaac challenge questions to get onto the course, I am sure you can probably look at the other threads to get an idea of how many you need to do. Not only is it really fun, but it is super good on a physical science/ engineering personal statement- and the questions you do to get in are great preparation for things like PAT/NSAA and interviews.