Motorists are facing lengthy delays after the closure of a major tunnel. Long queues are forming on the M25 anticlockwise at junction 2 after the left-hand tunnel of the Dartford Crossing was shut just before 2pm. Avoid getting stuck on Kent’s roads by keeping up-to-date on all of the latest traffic and travel news here or by following our live blog. It is understood to be due to a broken-down vehicle. The right-hand tunnel remains open, however. More on this as we have it.