The road rage incident began when the man, driving a black Mercedes, drove up close to the back of a grey Mercedes being driven by a 64-year-old man, who was with his 63-year-old wife, along the M275.

The driver started flashing his headlights and trying to overtake, then was seen swerving between the lanes on the motorway causing other drivers to get out of the way.

The couple carried on with their journey but were overtaken by the man as they approached the Rudmore roundabout in Portsmouth.

He pulled sharply in front of them making them stop. He then got out of his car shouting and swearing, and demanded the man in the grey car get out.

When the couple stayed inside their car the man punched its windscreen twice while shouting, before he drove off.

Anyone with information about the incident, which took place on Friday between 3pm and 3.30pm, should contact PC Nicholas Hughes at Fratton police station on 0845 045 4545 or 01962 841534, or call Crimestoppers anonymously on 0800 555 111.