In addition to its list of gluten-free products, Sainsbury’s also publishes gluten-free recipes on its website. On the recipe page, enter “gluten” as a search term.
(My brother and sister-in-law lived in London for many years, and I can tell you that Sainsbury’s was stocking an amazing selection of delicious gluten-free foods years before any similar products started to show up in American stores. When I visited London, my sister-in-law would buy me the Sainsbury’s gluten-free fish sticks and pizzas, and I would fight my little (non-celiac) nephews for them. When they visited me in the U.S., I would make them bring me half a dozen boxes of the Sainsbury’s gluten-free bread mixes.)
The Delhaize company has developed an assortment of specialty food products for people with special dietary requirements, including those on gluten-free diets. These foods are displayed in a separate section in its stores. A list of these items (in French) is available on their website.
This is the largest store in Israel for Kosher gluten-free products. They ship worldwide.