The 42-year-old Jaidee, who was the leader through three rounds, holed four birdies on the back nine at Celtic Manor, after bogeying the fourth and double-bogeying the par-five ninth, where he went out of bounds before finding a bunker.

Jaidee finished 6-under 278 for his fifth European Tour title and his first in mainland Europe.

The Netherlands' Jooist Luiten (72) and Denmark's Thomas Bjorn (68) shared second place with Spain's Gonzalo Fernandez-Castano (67) and South Africa's Richard Sterne (68) at 5-under.