When I was at school many years ago (late sixties), I had a history teacher who was full of anecdotes ( now seems to be called "useless information").
He told us that a law was still in place that specified that all road vehicles must carry a nosebag. Apparently, the law went back to the days when only horses/donkeys were the means of pulling carts etc on the road, and some cruel owners forced the animals to travel long distances without food. The law was put on the statute books by the government of the time and was something of a victory for the animal rights campaigners - yes, they were about then too.
He had us all aghast when he told us that, in theory at least, if a police officer searched your car boot and found the nosebag missing, you could be heavily fined or imprisoned!
I've read of some ancient laws being repealed, but I can't say I've heard that this one has, so watch yourselves and get out there and buy that nosebag!