I'm a new member to this site and looking for some advice.

I've recently brought my first cosworth stage 3 setup, I've only covered 800 miles in it and already I suspect that the head gasket is on it's way out as it is pressurising the water system and expels a small amount of water when I put my foot down
There appears to be small traces of oil in the cooling fluid as well.
The engine itself seems healthy ie. no smoke.
I've only topped up approx half a litre of oil in this time.

I live near Lowestoft and was wondering if there is anywhere that anyone could recommend where I could take it for repair? ie.the head pressure tested, skimmed, valve guides etc. And what sort of price would I be looking at?

robbie505