[keiths]

Thanks for the replies. It seems this is a bit of an ongoing issue if you want to keep your cars fully intact, the very nature of using the cars means there is some inevitability of things like door mirrors aerials etc going missing.
However, good news!  Following another search the missing mirror was found at the side of the track!!
I will get a new Superglue before refitting, a decent Cyanoacrylate glue from experience seems vital, in order to give the best chance of these parts future survival!