Food additives What they are used for http://www.umm.edu/ency/article/002435.htm

Guide to food additives - Check out the E numbers: what they, what they do, together with any known affects. http://www.x-sitez.com/allergy/additives/index.html

CODEX Alimentarius International Food Standards Agency [United Nations] http://www.codexalimentarius.net/web/index_en.jsp

Food Allergy & Anaphylaxis Network Canadian site with up to date information and advice including "Tips for Food Service Staff' (aimed at school cafeteria but relevant to other establishments.) http://www.foodallergy.org/index.html

CPSI's Guide to Additives http://www.cspinet.org/reports/chemcuisine.htm