Sorry for delayed response but for some reason Opera won't let me reply to a thread so I've reverted to Chrome.
Anyway, that's a nice thought Hotelman and thank you.
But happy to report that on Monday morning I asked the young man running the site for help; within half an hour a guy turned up on a moto, chased and caught a cow (versatile these Moroccans), then took the wheel off and took it away for repair. Wish I'd managed a photo of him, the guardian AND the wheel on the moto!
Less than an hour later he was back, refitted the wheel and showed me the half a broken screw he'd taken out of the tread. Job done, KwikFit eat your heart out. Mind you, he did use my tools and jack!
What did he charge -out of interest?