A lot of tyre places will only fit tyres supplied by them as they
seem to think that they will be blamed or claimed against for
anything that goes wrong with the tyre after they have fitted it.
So...my advice would be to anyone contemplating buying their
own tyres and having them fitted....check to see if your local
tyre place will fit them otherwise you may have to take a trip
to find one that will. Going rate 'down Sowf' (aka towards London)
is £5 per tyre minimum for removal of old tyre, fitting new valve
and tyre, and then balancing. Charge includes for recycling/disposal
of the old tyre/s.