A Hampshire police spokesman confirmed officers were called at 1.10pm today to the layby on the A3 southbound.
The man's body was in the vehicle, police said.
Police are treating the death as non-suspicious.
More details to follow.
Man found dead in layby on the A3 at Clanfield
A MAN'S body has been found in a vehicle stopped at layby.
By The Newsroom
Monday, 5th November 2018, 2:46 pm
Updated Tuesday, 6th November 2018, 5:48 am