A major fire has destroyed a commercial building at Redhill Aerodrome, Surrey.
It broke out in the Old Main Block, and was spotted by the Kent, Surrey and Sussex Air Ambulance as it came in to land at 01:50 BST.
Surrey Fire and Rescue Service said nine fire engines plus support vehicles from West Sussex attended the scene.
It said the flames started in the kitchen of the large single-storey complex, but there was nothing to indicate it was suspicious.
The fire was quickly brought under control and there was no damage to other property.
No-one was on site at the time.
Redhill Aerodrome said the Old Main Block, which housed the workers' cafe and offices, was totally destroyed.
More than 20 companies are based at the aerodrome near the M23.
Plans to build a hard runway in place of the three grass runways was turned down by a planning inspector last year.