I just googled for them and found this thread that you might want to read
http://www.seatcupra.net/forums/showthread.php?p=1558172#post1558172

At the end of the day it's hard to cut corners in car insurance for first time drivers.

You just need to bide your time and get some cheap motor and a years no claims (possibly also pass plus) and it'll drop quite a lot after year 1 and heaps when you turn 21.

I'd love an Aston but I couldn't afford to insure that either. You have to start somewhere. In my case a £500 metro I bought off my brother. Yeah it's a shed but it gets you through the first year.