For 2009 GSE switched to Yamahas and James Ellison joined as him teammate. Camier quickly dominated the series, winning even more races than Byrne had in 2008. He clinched the title with four races to go fittingly by overtaking closest rival Ellison on the penultimate lap of race 1 at Silverstone. Immediately on returning to the pits he was greeted by Niall Mackenzie (the last man to win the BSB title on a Yamaha) decked out in his original 1998 Rob Mac Cadbury's Boost leathers. Camier ultimately won a record-breaking 18 races despite only leading out of the first corner twice. His success led to the organisers of the series to adopt the "Showdown Rule" for 2010. This revised the points system to the split-season format popularly used by saloon-car series in the United States.