I want the government to fund vouchers for people with allergies for free from, vegan and gluten free food items.

Vegan, dairy free or free from products are a lot more expensive than the same products that contain dairy items. For example, at Christmas I can buy a character advent calendar containing milk for £1-£2 but a dairy-free advent calendar costs £5-£6. It is the same with bars of chocolate, loaves of bread and other food items.