Michael Perkins, 49, a road policing officer based at Chichester, appeared at Hastings Magistrates' Court charged with common assault and a public order offence.
He was found guilty of common assault against a woman prisoner he was transporting to custody in November 2011 after she had been arrested on suspicion of drink driving. He was fined £495 and ordered to pay £900 costs. He was found not guilty on a charge of using threatening words or behaviour.
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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 London-bound carriageway near Ashford. A body was found there last night.