I don't generally like being proved wrong about things, but this time I coulnd't be happier.
6:30 this morning meooow meooow meooow. I woke up thinking I recognise that sound! The whole family was up in seconds as a Gizmo declared he was back home! His head was soaking wet, but his body was bone dry, and he's got loads of matted fir around his neck, but other wise he's fine. Already taken him down the vet to get him checked over, and all is fine. The vet offered to shave his neck to remove the matted fir, but I couldn't bring myself to make him look stupid, so we'll slowly comb it out.
Got no idea where he's bin, but to have a soak wet head, but a dry body, and loads of matted fir under his collar, maybe trapped under something? Maybe by his collar?
Anyway, I was wrong, he's come back, and I couldn't be more chuffed!
Over the moon for you

Cats are the strangest...