I can't actually describe how angry I am about it. He's had it for two months and now it's gone. And I can only blame myself - he got vouchers to go to Halfords to buy a new lock and suchlike for it, and we hadn't got around to doing it so it had been getting kept at the bottom of our stairwell. Someone has walked past, seen it and just lifted it.
I want to punch things. Mostly myself.