Hmm, I didn't notice those when I was in Tesco last Wed, will have a look next time I go, as the local feral rescue would appreciate them - they put down 8 normal tins at each meal I think!!
Ela my tesco has a collection bin for animal trust rescue
Our local sainsburys in Chestfield was down as Chesterfield on their website until recently
Good for mult-cat households or rescues