One appliance and crew from Amersham and one from High Wycombe attended, along with an officer.
A car had overturned onto its side. It had been involved in a collision with an electricity pole. One man was out of the car before they arrived. The firefighters provided him with immediate emergency care.
They made the scene safe and put a cordon in place.
South Central Ambulance Service also attended. The incident was left in the hands of Thames Valley Police and electrical engineers.