In reply to Connor Nunns:
It really shouldn't be needed, but seeing as this seems to be happening more and more... should the BMC look at putting up / adding to signs in parking areas telling people not to throw things off the edges?
I do really hope that the majority of the time it's people who are ignorant to the risk, rather than them not caring if it lands on someone. Same goes for people who start fires / BBQs, where big clear signs hopefully make people think twice.