Firefighters are battling a caravan fire near junction 16.
The blaze has shut Hay Lane near Butterfly World.
Crews from Swindon and Westlea fire stations were called out at around 10.20pm on Wednesday.
Firefighters are battling a caravan fire near junction 16.
The blaze has shut Hay Lane near Butterfly World.
Crews from Swindon and Westlea fire stations were called out at around 10.20pm on Wednesday.
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