Unfortunately that would just get you lumped with a criminal damage charge.
There really doesn't seem much you can do apart from call the police and hope they can identify the owner.
There's a bit of an issue with these rent-a-drive schemes. I remember reading a story about some poor sod who lived near an airport, and got home from work one day to find someone had parked on his drive. He figured someone would move it within a few hours, but it was there an entire week until the owner turned up. He'd been on holiday and didn't realise he parked on the wrong drive that he was renting. Police wouldn't do anything as it was parked on private land.