Thames Valley Air Ambulance has landed in Swindon for a serious medical incident on a building site.
The helicopter touched down on the Dorcan Academy playing fields at around 2.30pm, allowing specialist critical care medics to attend the time-critical emergency.
Wiltshire Police and South Western Ambulance Service appears to be attending an incident at the former Thermo Fisher Scientific factory, which is currently under renovation.
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Emergency services have been sighted on scaffolding erected around the building.
More follows.