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. 
Emergency services have been sighted on scaffolding erected around the building.
More follows.
