Recommended for imitation: Migros, as one of the most sustainable retailers, should also achieve what a British supermarket does - otherwise it may soon be pushed out of the top ranks:
https://netzfrauen.org/2019/02/16/plasticfree-2/?fbclid=IwAR2vmQRpqTkpqH9HA8I-uxvHcnua_fMXqGCO3RXNrMeSY20hdWpIrdFEQws