Well ... Terry finally had a chance to come and collect it today, so he can now move from String and Gum charging solution to a shiny new wall charger
Terry very kindly bought me a lovely bottle of Single Malt which was completely unexpected, many thanks
I have had absolutely no COMMS from Tesla on the other referrals since and I'm therefore completely in limbo about being able to come to some arrangement with those folk ... "thanks for the support Elon"
... sadly so busy just at present that I haven't had time to chase them up either, but given their 6-week response time on Referral issues not sure there's much point.