Hi, thanks for coming back to me.
I'm convinced the swap has happened there as I bought the car from the dealer 18 months ago as a ex demonstrator and, with the exception of having two new tyres fitted on the front by Event Tyres (who are always excellent and who I have used for years), the car has never been anywhere else. Thanks for the suggestion and I will be checking the casting marks tonight and hopefully that'll throw something up.
Anyway, the dealership has a number of branches and franchises, however remains family owned and run. A swift check on "LinkedIn" and I tracked down a director and I have exchanged details with him this afternoon.
I'll let you know what happens.
Ian