Presumptive evidence as to injurious nature of food

Where regulations made under this Act contain provisions prohibiting or restricting the addition of any substance to any food, the addition of that substance– (a) if made in contravention of any of the regulations which is expressed to be made for the prevention of danger to health, shall; and (b) if made to an amount not exceeding the limit, if any, specified by any of the regulations, shall not, for the purposes of this Part, be deemed to render the food injurious to health.