Its is interesting to note that Tesco often advertise the largest profits of the "big four" in the UK, in mant ways they could really up their game.
Top of the pile .. . . . . Sainsbury. Not too surprised. Sustainable products cost more, and Sainsbury stock a lot of premium products.
Waitrose, not normally counted in "the big four" stocks 35 products that carry the marine stewardship council eco label.
Sustainability Labels
Eco Labels