The way allergens are labelled on prepacked foods has changed. The Food Information Regulation, which came into force in December 2014, introduced a requirement that food businesses must provide information about the allergenic
ingredients used in any food they sell or provide.

There are 14 major allergens which need to be mentioned (either on a label or through provided information such as menus) when they are used as ingredients in a food. Here are the allergens, and some examples of where they can be found: