A woman was released from a vehicle following a crash on the A413 at Great Missenden on Friday.
One appliance and crew from Amersham and one from High Wycombe attended.
A woman had become trapped within a car that had ended up on its roof.
The firefighters released the woman, passing her into the care of South Central Ambulance Service.
Thames Valley Police and Thames Valley Air Ambulance also attended.
The incident was left in the hands of Thames Valley Police.