The incident took place in Oilmills Road, shortly after 5pm and involved two cars. Cambridgeshire Fire and Rescue Service crews from Stanground and Ramsey attended and cut the man free of his car before paramedics stepped in. A spokesman for the East of England Ambulance Service said: Two ambulances, a Magpas medical car, a rapid response vehicle and an ambulance officer attended the collision, where one vehicle had flipped over. Two patients were treated with suspected arm injuries - one patient was taken to Hinchingbrooke and the other was taken to Addenbrookes for further care. Two other people were assessed by paramedics at the scene but they were discharged from scene and did not require any medical assistance. A spokesman for Magpas: Doctor Andy Lindsay and paramedic Keiran Bromley arrived via the Magpas Rapid Response BMW, following a road traffic collision involving two cars. The Helimedix assessed a man in his 50s who had suffered serious injuries to his lower arm. The Magpas team put measures into place to protect the patients injuries, before he was taken to Addenbrookes Hospital, in a serious but stable condition, by an ambulance service paramedic crew.