So it's unlikely then

That's one thing I've learnt from being sci, everything is possible it's just you need money to do it lol! Such is life!
I emailed thruxton about it and got a swift reply.
The Aston Martin and Ferrari F430 have paddle shift on the steering wheel and their exact words were "so you could drive those" but I don't think they realised what I meant by "hand controls" and "paraplegic" lol...
I know there was an episode of top gear where they had a coupel of disabled people go round the track in a porsche 911 and I think it had hand controls but can't remember exact details...maybe I should get in touch with them...after a bit of googling I've found it was series 2 episode 10.
Thanks, Ryan