The driver fell ill at the wheel before his car collided with a Ford Focus on the Thorney Croft roundabout, on the junction of the B3400 Churchill Way West and A340 Ring Way West
A driver involved in a crash after he is thought to have suffered a "medical episode" behind the wheel has died.
The 57-year-old man was driving a Lotus 2eleven along the A340 in Basingstoke when his car collided with a Ford Focus, police said.
It is believed he fell ill at the wheel before the crash on the Thorney Croft Roundabout at about 15:50 BST on Saturday, Hampshire Police said.
The driver was taken to Basingstoke and North Hampshire Hospital where he died.
