hi, well the car spent near on 2 weeks there, shim's done, and it still makes the tapping noise, Roberto does not know what it may be without further investigation so i had to take it away.
i have had a local person have a look, and they think it could be a worn camshaft, but in short, not totally sure, but they did say the noise is made in time with the cams not the crank so 90% sure its top end, and it defiantly sounds top end.
the noise sounds less harsh when the engine is hot
i have done over 100 miles in the car now of mixed driving and the noise has not changed at all.
EDIT= 1 thing though, the noise is defiantly less harsh, not as loud since the shims and an oil change has been done, so 1 or both of those things has effected it defiantly, before either was carried out the engine sounded rather terminal, now the noise just sounds like a slightly tappy engine.