Marks and Spencer have their own gluten free bread and cakes. They are also a very friendly coeliac store with quite a comprehensive listing in the coeliac food guide as to suitable foods. Marks and Spencer have all of their own foods labelled with the cross grain symbol if they are suitable for coeliacs.
Marks and Spencer Ireland have a good selection of gluten free foods available. The recently extended their range. Breads, pizza bases, cakes, treats, pasta and flour all available. As well as takeaway sandwiches.