The Scottish parliament has shelved plans to charge a 10p levy on plastic bags.

Lib Dem MSP Mike Pringle said he withdrew the proposal because retailers had made positive strides as a result of the public debate provoked by his ­Environmental Levy on Plastic Bags (Scotland) Bill.

But he warned: "I want to see a massive decrease in the use of plastic bags. Otherwise I will re-introduce my Bill."

A meeting last month of UK retailers, ­Defra minister Ben Bradshaw and Scottish environment minister Ross Finnie failed to reach agreement on a voluntary code of practice on the use of plastic bags. The group will meet again at the end of this month.