Hmm, I think it's only Morrisons. I only shop in Tesco normally, but will go to Morrisons to stock up (get really funny looks buying 10 packs), they are worth the 16 miles!!
Also - get exploring your local butchers. I stumbled on one the other week who does syn free burgers and sausages, expensive though (£2.50 for 6 sausages). x