Tyne and Wear Metro cleaners to strike for seven days
Cleaners working on the Tyne and Wear Metro will strike for a week as part of a dispute over pay.
The cleaners, who work for Churchill, will take a further seven days of strike action from 22:30 GMT on Friday.
The Rail, Maritime and Transport (RMT) union said the action would come to an end at 22:29 GMT on Friday 22 February.
RMT general secretary, Bob Crow, said members had shown "guts and determination" in a long campaign of "rock-solid" strike action.
Services on the network have been unaffected by previous strikes by the cleaners.
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