Video from yourthurrock.com, showing traffic stuck behind a multi-vehicle accident, which has closed the clockwise carriageway near Thurrock. One person has died, and at least four others injured.
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Corey Briscoe-McLeary, 38, was seen by a police helicopter crew mounting the pavement and running red lights.
The New West End Company representing businesses in Oxford St, Regent St and Bond St said reopening posed 'extraordinary challenges'.
Dominic Cummings said he drove to Barnard Castle with his wife and child to test his eyesight before making the drive back to London.