One appliance and crew from Beaconsfield and one from Slough attended.
A car had left the road and rolled onto its side. An electricity pylon had been affected. One man and one woman were out of the car and in the care of South Central Ambulance Service when they arrived.
The firefighters established a scene cordon around the pylon, and the road was closed by Thames Valley Police.
The incident was left in the hands of the electricity company and the police.