All lanes are now open, recovery work completed and broken down vehicle removed on the M4 Westbound between J15 A346 Marlborough Road / A419 Marlborough Road (Swindon East) and J16 A3102 / B4005 (Swindon West). Lane one (of three) was closed.
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Ukip's ruling committee unanimously backed a vote of no confidence in Mr Bolton on Sunday and six key party figures have also resigned.
The announcement caused the organiser's website to briefly crash.
Tuesday morning's weather for the west of the region