Please correct me if I am wrong. But Tesco runs what we in the US call "supermarkets", yes? And the British Tescos have seafood departments, yes? Don't these sell live lobsters, live oysters, live clams, and live mussles? Don't folks in Britain take those home to either kill in horrible ways (drop alive into boiling water) or even eat while still alive (on the half shell).

Tesco already sell the flesh of animals slaughtered inhumanely, they have whacking great aisles of the stuff. Boycott them already. Boycott all the supermarkets. Who in their right mind would want to go in there anyway?