Two crews from Aylesbury and one crew from Thame attended a fire in a single‑storey building.
Firefighters used two sets of breathing apparatus and a hose reel jet to extinguish the fire.
A full search of the smoke‑logged area was carried out and all persons were accounted for.
Positive pressure ventilation was used to clear smoke from the building.
Thames Valley Police and South Central Ambulance Service were also in attendance.