Two appliances and crews from Aylesbury, one from Winslow, one from Towcester, one from Thame, along with three officers attended.
The single-storey building was well alight on arrival.
There was a road closure in place and five people were evacuated from houses nearby.
The firefighters used:
- Two sets of breathing apparatus
- Two main jets
- A thermal imaging camera
They also isolated the electric supply in the building.
The building was 100 per cent damaged by fire.