Three lanes are closed on the M5 southbound between Junction 20 B3133 (Clevedon) and Junction 21 A370 / B3440 (Weston-Super-Mare) due to an overturned vehicle.
At least four fire engines and the police helicopter are attending.
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Here's everything we know so far about the Manchester Arena explosion.
Witnesses reported hearing a "huge bang" at the venue during the concert on Monday evening.
Mist and fog will not lift until the afternoon in the South West but it will warm up by the afternoon.