Have to say the new VW Fox looks terrible and actually the new Fiat 500 looks ok.
What's your budget going to be then, (considering you've got another 2 years to save up, plus the time it takes to pass your test) ?
Also consider saving up the money to pay for your insurance as it's usually cheaper to pay for insurance in one lump sum.
Guessing you might have about £3k by that time or a bit more if you add in birthday money and stuff
You could go for something slightly older but still recent, I'd aim for a 2004/5 Polo 1.2. Enough power, looks decent, should be able to get one around the £3/4000 mark.
Or by that time a Mk4 Golf won't be too expensive, though it'd have to be a non-GTI for insurance.
Or you could just by a cheap runabout for £500-1000 for a low power model to get your first year no-claims then upgrade later.