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The poll comes ahead of a debate in the House of Commons on Friday on a new Bill which would introduce such a system in England.
Coal's share of the power mix had fallen to 7%, while wind climbed to new highs to provide 15% of the country's electricity.
The M20 in Kent is shut between junctions 10 and 9 of the Londonbound carriageway near Ashford. A body was found there last night.