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.