I was just discussing this with a member of my family. I think they have to make a universal law to ensure that it's enforced. Obviously if you're in the middle of nowhere in the Peak District, you're not going to be affecting anyone. Equally, most of us are sensible enough to do the right thing (i.e. keep our distance). But if they don't bring the measures in, you just know there will be people out there who don't take the necessary precautions, or who live in too built up an area to be able to.