The family of a 56-year-old man killed in a double fatality in Jandakot three days ago has expressed their shock and sorrow.

Glenn Carter from England died when his vehicle veered across Leach Highway and collided head-on with a vehicle being driven by 28-year-old Luke Wales on Tuesday morning.

Both men died at the scene.

Police are investigating if Mr Carter suffered a heart attack before the crash.

His family has described him as a much-loved, kind man who worked in construction near London and drove mini cabs on weekends to further his dream of migrating to Australia to be with his family.

The family has also conveyed their sympathy to the family of Mr Wales.