Two appliances and crews from West Ashland and one from Broughton attended, along with an officer.
One woman and one girl were released, injured, before they arrived. Three men and two further women were released, uninjured, before they arrived.
The firefighters provided immediate emergency care, and released a fourth woman, injured.
They used hydraulic cutting equipment and a Tirfor winch.
All those who suffered injuries were passed into the care of South Central Ambulance Service.
Thames Valley Police and a critical care doctor also attended.