Thanks for replying. Yes, I've been on those sites - and others!
I just want to make sure we're not missing out on some super company that aren't easily found on the net! Also I'd love to hear any tips/advice from anyone who has bought an adapted car. They are quite expensive and my parents are finding the whole thing a bit daunting at the moment.
I'm sorry to hear that. I think they will do it within the next six months or so and I'm hoping it will make things a little bit easier for them...or less hard anyway.