what uni for computer science w cybersecurity in south east?

hiya! as it says in the title, im looking at a computer science with cybersecurity degree. im in yr 12 doing maths, further maths and computer science, but finishing a level maths this year.
basically, the problem i have, is that im doing better than expected. i thought i would flop my maths exams and get a B or an A. but with how the 2 pure papers have gone, i feel like an A* is quite likely. i was looking at the university of kent because it only needs Bs for all three, isn't too far from me, looks nice and has links to the specific area i want to work in. but i feel like i could do better.
other unis ive been looking at include bath, southampton (i especially like the idea of southampton), surrey and portsmouth. i know bath and southampton are considered pretty good unis in general, but im not sure how they compare for computer science. also , for context, i got an A in my computing mock but should hopefully get an A*, maybe an A in fm.
has anyone got any knowledge or experience with these unis for computer science, or has any advice?

You may have a problem as you'll only be sitting two A levels next year. I''m surprised you are only taking 3 when one is in Year 12.

its just the way my school does it, still a full a level this year. i know some of the top end unis don't let you take any early but i dont mind not going to a really top end uni