A man had two teeth knocked out during an attack in a supermarket car park.
His girlfriend was also punched in the stomach during the attack in the Farnham branch of Sainsbury's.
The incident was started by a minor collision between a van and a car.
The victim, who had been driving the car, was arguing with the van driver when a third man approached and threw him against a wall and hit him in the face, before punching the woman.
The attacker was dragged off the couple and then walked towards the supermarket.
He's described as aged between 25 and 35, stocky with cropped hair, and was wearing a hi-viz jacket with 'Carpentry Co' written on it.
The attack happened at 09:40 MT on 7 February.