The A342 Devizes Road is blocked in both directions due to a building fire near Church Lane / Pewsey Road.
It's also affecting the A342 Andover Road in both directions at A345 High Street By the Elm Row houses.
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Heavy showers overnight, hail and thunder possible, humid
Heavy showers overnight, humid, thunder possible
The Maltings shopping centre was closed to the public after a small amount of the Novichok substance was found in the area.