Well, its been quite a long time since I last posted and I have also checked out John Dees videos which have been very helpful.
I never did end up buying a jaguar, instead opting for a four door sedan, a Lexus GS450h on a 2008 plate. Had 7 months of bliss and then the timing chain decided to give up. Ended up selling it to Copart and had to get some temporary wheels after that. I am still undecided what route I will be taking but more than likely if I do purchase an XK8, it will be a coupe to start with.