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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Philippa Drew has your forecast - chilly overnight but remaining settled.
Philippa Drew has your forecast - staying settled but chilly overnight.
A clear if slightly chilly night with a nippy start to Saturday. But it will turn into a day of blue skies and sunshine - highs of 21 C