To: Supermarket bosses Dave Lewis (Tesco), Mike Coupe (sainsbury's), David Potts (Morrisons), Sean Clarke (Asda), Steve Rowe (M&S), Rob Collins (Waitrose), Giles Hurley (Aldi), Steve Murrells (Co-op), Christian Härtnagel (Lidl)

Supermarkets, do more to help us help the planet and our health