Great old stuff.
I had an off on my Fazer on mud deposited on the road by vehicles accessing a building site. I claimed off the builder who told me to 'go away', reported the mess to the council who threatened to close the site down if they didn't keep the road clean.
Didn't get my damage paid for but it felt good.
Had something similar a feew years ago. Low sided on oil while turning into a carpark. The garage next to it was using their forecourt to spray clean the engine bays of pickups, vans and other commerical vehicles and the oily water was flowing downhill and pooling at the carpark entrance.
Insurance company's appointed solicitor basically gave up after a few months. He said that there was little chance of a claim. Turned out later that he was a Legal Executive in training.
A while later the garage went bust. I like to think that their solicitors fees help with that.