At 7.44am on Saturday (16) one crew from Huntingdon and one crew from St Neots were called to a fire on Centurion Way in Godmanchester.
Firefighters arrived to find a fire in a warehouse building, measuring around 100 metres by 80 metres, involving industrial equipment. The building was heavily smoke logged.
Wearing breathing apparatus the crews extinguished the fire using a hose reel and cleared the smoke using a positive pressure ventilation fan.
The crews returned to their stations by 10.45am.
The cause of the fire was accidental.