Mustard is listed one of 14 main allergens that must be listed on food labels. Some people with this allergy share an allergy to rapeseed oil, which is used in a huge number of processed foods. Rapeseed oil is often listed just as vegetable oil, making it hard to identify.
The Government must ensure that rapeseed is clearly listed alongside other major allergens when it is used in a product, so that people with a rapeseed oil allergy can tell if products are using the oil or not - many products say they contain solely vegetable oil when they contain traces of other oils too which can cause severe allergic reactions.