The westbound M4 is closed due to a serious accident between J18 the A46 (Bath/Tormarton) and J19 (M32 Bristol).
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Jeremy Corbyn's visit has been one of the big talking points of another busy day at Glastonbury.
The Labour leader said socialist politics would not be put "back in a box" as he appeared on stage at the festival.
Turning windier with a few showers