Following his victory in Sunday's Scottish Hydro Challenge, Walker flew to southern England where he finished second in a tough 96-man field with a six-under 133 behind compatriot James Morrison, who was first with an eight-under 131.
The result represented success at last for Walker who, after 10 failed attempts, finally gets his chance to play at The Open at Royal Lytham from July 15-22.
It was disappointment for Ryder Cup captains old and new with Colin Montgomerie and Jose Maria Olazabal both failing in their bid to qualify, finishing equal 14th and 30th overall respectively.
A five-man playoff decided the last of the two qualifying spots with Briton Lee Slattery and Denmark's Thorbjorn Olesen holding their nerve to come through.
