One crew from Beaconsfield, one crew from Windsor and one crew from Slough attended a fire at an garage which was well alight on arrival and smoke issuing from the structure.
Firefighters used two sets of breathing apparatus and two hose reel jets to tackle the fire.
Firefighters also used an angle grinder, reciprocating saw and hydraulic spreaders, to gain access and extinguish hidden pockets of fire.
The garage was 100 per cent damaged.
Crews carried out a re-inspection at later using a thermal imaging camera to check for remaining hotspots