Yorkshire-born Charlton, whose family emigrated to South Africa while he was still a child, was a regular in his home round of the world championship.
He took his best finish at Kyalami in 1970, finishing 12th in a Lotus 49C run by respected local outfit Scuderia Scribante. A year later he raced a factory-Brabham BT33 in the South African Grand Prix
His sole outing for Team Lotus came in the 1971 British Grand Prix as team-mate to Emerson Fittipaldi, one of a number of Formula 1 outings in Europe. After qualifying 13th, his engine expired on the second lap.