One crew from Broughton and one crew from Newport Pagnell attended a fire involving a row of garages.
Firefighters used one main jet and two hose reel jets to extinguish the fire.
Crews gained entry into a number of garages to check for fire spread and carried out extensive damping down, turning over and cutting away operations to ensure the fire was fully extinguished.
A reinspection was carried out later in the morning, where firefighters used a thermal imaging camera to identify and extinguish a number of remaining hotspots.
Thames Valley Police also attended.