You could apply but you might not get an offer. They'd want AAA from you ideally, and I had a friend who got ABB last year in AS on the 3 subjects she was carrying on with, and she didn't get offers from any Uni she applied to that needed AAA. You'd just have to make sure your teachers predicted you AAA or above and gave you a good report, and make sure you have a really, really good personal statement too.
If I was you, I'd apply to Warwick but make sure your other 4 Uni's require lower grades where you're more likely to get an offer such AAB or ABB. You'd definitely get considered for Uni's who required those grades, but AAA might be a bit of a push.