Head gasket

[jvr]

Hi guys
It seems like my head gasket is starting to sail up the Danube.Its starting to use a small amount of coolant,i've had it pressure checked which has come up fine at 1.5 bar,no puddles,no oil in water yet and changed the pressure cap, so the only other thing is the gasket.So can anyone recommend where to go to get this sorted at a resonable cost.I live in Gloucestershire so i'll probably have to travel a bit
cheers
paul