Police have also released an image of the Mercedes box lorry that Mr Fletcher had been driving, in the hope that it may jog memories.
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Passengers on the Underground, Overground, many mainline rail services and the can use bank cards instead of Oyster cards from today.
Low cloud rolling in from the North Sea tonight to give some patches of mist and fog.
Train, tube and tram passengers can use bank or credit cards to swipe open ticket barriers from today.