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.
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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.