Wayne;

I have solved the problem on my car. It was the cam position sensor, someone had put it in with a screw which was too long for the hole (it was also crossthreaded which meant it took ages to take out) and so the sensor was in the right place, but youcould move it in the hole so there was obviously space for oil to leak out there.

If you have the same problem, then check your sensor, it maybe worth replacing the rubber ring on it aswell, i may still have to do this, although it did look ok.

Steve.