Thanks pioneer4x4 for your interest in my problem, I had just returned home, after driving through town using all gears did not suspect anything wrong with the car had preformed perfectly, I parked the car on the drive and turned the key to stop engine that's when I heard the noise for the first time, (all theses checks were made in neutral with no pressure on the clutch pedal) then re-started engine gave it a few rev's let it die down and heard the noise again, and was able to repeat time and time again. Incidently the engine ticks over very smooth and quiet, it just makes the rattle when engine stopping by being turned off on the key. Regarding oil pressure, nothing clever, I just checked oil warning light was coming on and going out.
Regards
Ken