Agree entirely with @Twoin18.
A couple of points:
*The UK is best for students who 1) know exactly what they want to study; 2) are very independent learners and 3) are good at sorting out their own problems.
*You can only apply to Oxford OR Cambridge, and it is best for 1) students who not only know exactly what they want to study, but love it so much they immerse themselves in it on their own time and 2) are able for extremely intense work loads.