Stunk to high heaven...
Phoned other half to ask if we've done something to upset the binmen. He reckoned a fox got it out of a bin and decided it didn't like it anymore in our garden.
Anyway I don't mind because it's given me that idea to throw a whole dead fish in the front garden of the house that dobbed me in to Richmond Parking Services. (It was obviously the people whose driveway I blocked)