The bad news is that Londoners get through a shocking 1.3 billion carrier bags each year¹. There are around eight million of us living here, but even so that’s pretty wasteful. The good news is that a partnership between Government and the British Retail Consortium is trying to do something about it.

The Get a bag habit campaign, launched today, has led to a pledge by seven supermarkets to make a hefty 50 per cent cut in the number of bags given out by the end of May this year. Full marks to Asda, Co-operative Group, Waitrose, Marks and Spencer, Sainsburys, Somerfield and Tesco for participating. But what happened to Morrisons?

¹ According to a YouGov survey of 2,436 adults between 13-16 March 2009.