The Fire Brigades' Union has confirmed this afternoon that a strike will go ahead tomorrow.
The one hour strike will start at four and five o'clock in the morning. But normal services will resume for the Olympic Torch Relay in the area later in the morning.
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A campaign has been launched to improve one of the key commuter routes in the East, linking parts of Essex and Cambridge to London.
Former Pink Floyd frontman Syd Barrett is being a remembered at a special concert at the Cambridge venue where he played his last gig.
The rather cloudy skies will remain over the next few days but it will stay mostly dry. Some fog overnight at the weekend.