For information on food allergy alerts in the UK, go to: http://www.anaphylaxis.org.uk/alerts/food_alerts.shtml
Allergy Alert Services
By registering with this website you will get automatic free updates when a food is declared to have unlabelled ingredients in it. There were approximately 30 incidents of this happening in 2005, by signing up you will be warned about such incidents and will be able to avoid those foods, therefore avoiding any severe, unnecessary reactions.
On their ‘Food Alerts’ page they regularly update information regarding unlabelled ingredients and contamination incidents involving nuts/peanuts, milk, egg, soya, wheat and gluten, kiwi, seeds, seafood and mustard.
Food Standards Agency www.food.gov.uk
This government based website provides alerts via text message about unlabelled ingredients and contamination incidents. They have two categories, Food Alert: for Action, where you will need to take your product back to where you bought it from, and Food Alert: for Information, where you do not have to do anything.