having the same problem with insurance atm, I'm 19 and currently insured as second driver on my dads car, managed to get it down to about £900 since his boss has let him insure it at the place he stays when working away, and since he's there more than he's home its worked out well, but him working away a lot causes problems with the car, as he has to take it down there just incase he needs to rush back home.
Currently looking for my own car now, still going to be second driver, but no matter what I find, the insurance is still around about £1,500, and that was on a 1 litre punto worth £500!