Stableman in all honesty with £1700 DI per month I'd buy an old car and save up for a few months.....then buy a new car with cash.....you'll get a much better deal and own your own car to boot (no pun intended).
I came into this world with nothing and still have most of it left!
I had quite a different experience from Orange who posted above with Car Loans 4 U, and can remember Orange posting of her/his poor service at the time. However I was fortunate enough to purchase a lovely car and had quite a different experience from Orange with CL4U. I did make sure before I applied that I had my completion certificate and the defaults had been removed from my credit files.
I've just come across a brilliant lender for car finance, who will also lend to people in existing IVAs. Feel free to e-mail me if you want further details.