Last week, during a visit to Newcastle, Mr Cameron said the level of drunkenness in the UK was a "scandal" and that supermarkets, bars and the drinks industry should do more to help the situation.

BBC: Tyne & Wear

Of these 240 are pubs, nightclubs and bars and 250 are supermarkets, says the government.

BBC: NEWS | UK | UK Politics | Drink laws 'will push up arrests'

Hotel Chocolat sells four different bars with 100% cocoa content in its branches, while Swiss company Lindt has 99% cocoa bars in UK shops and supermarkets.

BBC: Chocolate: The rise of the cocoa purists

Louis, in restaurants, bars, convenience store and supermarkets, and will be rolled out through Missouri and Illinois before distribution is expanded to the rest of the country.

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Officials said bars, nightclubs, cinemas and supermarkets would also be required to close between 22:00 (03:00 GMT) and 06:00 (11:00 GMT) local time from Monday to Thursday.

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