The number of laws we have...
...surely there is already one that would cover this? I mean, it's almost impossible to say how many laws effect the UK but between Scotland, England and Irish laws we must have one suitable one, then add the 49,000 or so passed by the EU, surely something fits?
Perhaps they can't be bothered to look and it's easier to add another one :)
I'm sure if I had a driver less car and crashed it (it crashed) someone would find a law just for me that I broke, so perhaps they're looking for a law that fits you lot!