Thanks fellas - all sorted as explained in the post just previous. My engine number was on the front of the block. I literally had to rub with meths/ acetone to remove a film and the number gradually appeared!

Yep, I am pretty convinced the locals have very little idea about the Sapphire Cossie - the 3 door is pretty famous but the Saph is a bit of a sleeper. I am certainly of the opinion that mine is modded (a little) as it certainly goes ballistic at 3500 revs!! Way more so than my twin turbo N54 335i. I WILL surprise a few locals at some point!