RobT

I eventually got the tyres from ASDA tyres - ordered online and they were delivered to and fitted by my local garage.

Really good value - Pirelli P Zero J 255/35 R20 97Y fitted and balanced etc for £475.08 inc vat.

Worth a go if anyone is looking.

Thanks for your comments on this.  I will have a look at both suggestions - they are both a saving!

I have the same tyres on my XJ (255/35 ZR20 97Y) and have just spent the morning getting prices on replacing the two at the rear. 

So far the best quote I am getting is £539.50 fitted from Kwik Fit (Pirelli), so I would be interested to know how much you paid, and if they are cheaper, where from?

Thanks