The Food Standards Agency have published an alert:

Sainsbury’s Italian Mushroom Risotto contains wheat gluten – but it doesn’t say so on the label. Don’t eat it!

From the FSA site:

Due to an error, Sainsbury’s Italian Mushroom Risotto has been manufactured with a sauce containing wheat gluten and chicken which are not declared on the ingredients list. This makes the product a potential health risk for people with an allergy to wheat or who are gluten intolerant.

I notice that this also means it isn’t suitable for vegetarians …

The affected product is Sainsbury’s Italian Mushroom Risotto 400g, all codes up to and including 14 SEP 2008

Sainsbury’s Supermarkets Ltd has recalled the product and are displaying notices in all stores.

If you bought it – don’t eat it. Take it back and ask for a refund.