Tesco

Stock a large range of gluten free and wheat free products in their 'Free From' section.

It's disappointing that allergy information is not easily accessible on their website

We contacted Tesco customer service and this is what they said: "The free from list can only be accessed if you are able to shop online and even with that, it will only show the products that are available in that particular store." Pointing out that it wasn't acceptable or helpful to people with food allergies didn't make any difference - their loss!