I heard about this on radio yesterday and the words 'more control' sprang to mind, followed closely by 'unbelievable'.
The aim is to reduce the amount of food wasted in this country and DEFRA wants supermarkets to stop the buy-one-get-one-free offers and introduce half price offers instead.
Supermarkets offer BOGOFs to attract customers and appears to work well for them. They get more business and the customer gets a 'bargain'.
If I want to buy melon on a BOGOF offer and immediately put them on the compost heap, that's my business and nothing to do with the government.
If politicians really want to do something about waste then I suggest they examine the Common Agricultural Policy which paid out over £50 billion to uneconomic production last year.