As I have never been one to buy ready meals, I don't look at their ingredients - now or before I was diagnosed as Coeliac. I have never ever bought a chilled or frozen pizza so I'm not sure how I got French nationality
BTW I also have to check all medicines, from cough remedies like Strepsils (they contain gluten) to antibiotics and anti-inflammatories and everything else.
Doctors often prescribe without thinking, I ask them to check then double-check myself at the pharmacy.
