Two women were seriously injured during a collision on the A413 between Buckingham and Padbury on Friday.
At about 8.40pm, a silver Fiat Punto travelling from Padbury towards Buckingham and a green Isuzu Rodeo 4x4 travelling in the opposite direction, collided near Lenborough junction.
The drivers of both vehicles, a 46-year-old woman from the Isuzu and a 52-year-old woman from the Punto, were treated at Milton Keynes Hospital. Their conditions are not life threatening.
Anyone who witnessed the collision, or saw either vehicle before it, should contact PC Steve Leathersich via the 24-hour Police Enquiry Centre on 101.
If you don’t want to speak directly to the police, contact the independent charity Crimestoppers anonymously on 0800 555 111 or online at crimestoppers-uk.org. No personal details are taken, information is not traced or recorded and you will not go to court.