Petition make factories have nut free zones

Too many products have the dreaded 'my contain traces of nuts' sign on them when, unlike other allergies such as wheat, milk or eggs, it is so easy to avoid cross contamination in the factories, I say that it should be a legal requirement for companies that trade in the UK to have to provide proof that cross contamination is indesputibly unavoidable in their factories, and that it is impossible to separate a sealed part of their factories for nut free products.
Lets bring nut allergy sufferer's that can't get medication for their allergy such as epipens out of fear of illness or even death.