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Coke Tulip, I am fully prepared for the key to turn up the day after the man has left, though I've now spent two days looking for it; life is like that sometimes. I do have a metal detectorist who visits the farm; he found an Anglo Saxon burial site last year. I fear that he'd spend most of the time finding dog food tins that the dogs have run off with, and assorted bits of farm ironmogery. Still, if it does turn up, at least I'll have a spare!