One appliance and crew from Beaconsfield and one from Maidenhead attended, along with an officer.
One car had been involved in a collision with a pavement mounted electricity box and rolled onto its side.
One man was released and being cared for by South Central Ambulance Service when they arrived. Firefighters released a second man, injured, and passed him into the care of the ambulance service.
They used an environmental pack to help prevent leaking oil from entering the drains and the incident was left in the hands of Thames Valley Police.