Three crews (Broughton,Newport Pagnell, West Ashland) alongside a Technical Rescue Unit from Mereway and an officer attended.
Firefighters were called to a road traffic collision involving a heavy goods vehicle and two cars.
The drivers of the heavy goods vehicle and one car were out of their vehicles uninjured prior to the arrival of the fire service. The driver of the second car was physically trapped. Firefighters used hydraulic equipment to release the driver and handed them into the care of South Central Ambulance.
Lanes one, two and three were closed.
Thames Valley Police were also in attendance.