There's one lane closed between Junction 16 (A3102 / B4005 Swindon West) and Junction 17 (A350 / A429 / B4122 Chippenham) due to a broken down lorry.
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There are reports that 15 people have been injured in a bus crash in France. The coach was taking a school group to Italy.
Around 200 people have turned out in Bath for a pro EU march and picnic.