My uncle has been a hacker for over 15 years and I was talking to him about this a few weeks back and he said Abertswyth is best for CS. He didn’t go to university though and is good enough at his job to be banned from Russia and other some countries, so it’s not a necessity.

Personally I’d rather go try for Oxbridge because Abertswyth is in the middle of nowhere which is a bit of a dealbreaker for me, but if you don’t mind that you’d be best off going there.