Hi everyone who posted their comments and advice regarding my search for centre wheel caps. Who would have thought that four pieces of plastic could cause such a problem. I am working through the advice given and will let you know the outcome when resolved. The latest from the dealership is I should be looking at part number G22C37190A for this particular wheel, I cannot bring myself to tell you the price of them (discussion for another day perhaps). Anyway the search continues .
Thank you all, much appreciated.
TT