Ah, the wonders of unconditional placement (sat A-levels a few years ago, applied to uni this year after dropping out 2 years ago).
To those panicking:
If you get rejected from your choicest of universities, don't fret. I only got into Nottingham first time around (to study Biochemistry) - so that was 1/6 institutions. I dropped out (I really, really suck at maths so the degree-level physics screwed me over).
I re-applied through the Ucas system just over a year later (dropped out mid-way through the year, so about 1.5 years) having spent the time working. Admittedly it was for a different course (Classics) but it was to Universities who were better in Classical academia than Nottingham was for Biochem. I got into 4/5 institutions (I'm off to Birmingham).
It appears that a lot of universities appreciate those with a little "life experience" (particularly as you can apply very early and you're a 'guaranteed pay-check'). If things don't work out then they might next time around, even without trying to improve your qualifications.
You can also get some really good placements on clearing - particularly if there are courses that haven't been able to make up enough numbers. Less likely this year with the amount of extra applicants to Uni places, but there are some gems if you get on the system early enough.
And at the end of the day University isn't everything - I've a friend who went into Insurance Underwriting straight out of college, and she's just passed some exams (qualified as an underwriter) and is now on £20,000-£30,000 a year (depending on where she goes from here). If she moves to London she is potentially looking at adding an extra zero onto that figure. That's while my friends are just starting 3rd Year at uni.