Er, there's a tyre place not far from me, but I guess thats probably too far out your way...
Edit: definitely, since your location says Newbury..
If the car's got steel wheels see any of the local scrap yards have one with a good set of tyres and then swap the wheels over.
Can we change Jez's nick to Honest Jez.
Whats the details? I dont mind where it is, as long as its southern.
You cant remember the name of the place perchance?