You're all far too clever. Just remember that Oxbridge is a big step up from pretty much every other Uni when it comes to work load. Otherwise, good luck!
I know a few people that attend both and I wouldn't wish it on anyone - far too much work (and that's not just me being lazy).
Lived in Oxford, had friends at Oxford Uni. Worked hard and played hard, no complaints at all fully reccomended.
My brother is at Oxford. You've got a far better chance of going there than Cambridge, especially if you are coming from a private school, if we're anything to go by.
So is Mankz by all account from friends at Cambridge its great - and the rooms you can get are amazing! Personally I didn't like the engineering course at Cambridge (tbh now the second year at Durham is pretty awful too) and I decided that I could do without the tourists having put up with them all through school
I feel a boast is required something along the lines of me actually have 5 AS's, but I shall cease and desist. You'll need to do some form of extra course or the like, something such as Headstart, EES or get some work experience to stand out from the group.
Did my PhD there (Oxford / St Cats / ICL). Basically, if you get as far as the college interviews (New, Queens, St Cats, St Johns are my faves but most are good) you will be asked a series of questions about your chosen subject area that you will likely not have faced before. Just try to stay cool and think logically. I remember my boss being more impressed with people that offered clear reasoning and got the basics right rather than those that arrived thinking they could jump to the right answer and only got it 80% right.
I am favouring St. Johns too, very cheap. Mankz: I agree, everyone who applies probably has got great A levels/GCSES. Stand out from the crowd.
What are you thinking of applying for? I went to a private school (nothing public like Mankz, coat-tailed toff that he is) and love it, but the others aren't joking. I'm a lawyer (admittedly a heavy subject) but the workload here really is off the charts by comparison to pretty much everywhere else (unless you're doing Medicine, in which case it doesn't matter where you go because the workload's horrible everywhere). It's great, but you're going to have to work really seriously hard before you can play. Either way, it doesn't matter how many A-levels you have, just that you get As in all of them. Your school will be a disadvantage rather than an advantage because interviewers will expect more from pupils that had over-and-above education, so make the absolute most of your opportunities now. Read around and get work experience, it's by far the best way to show interest in the subject.
There is a pretty good mixed compsci/natsci course you should think about if you are interested in this area. Apart from that I'm not even sure proper work experience is needed for compsci (certainly not maths). At least none of my friends doing those subjects have anything fancy as far as I can recall (I'm a 3rd year chemist).