 Jelley switched to the British Porsche Carrera Cup for 2010, driving for Team Parker Racing.He had a consistent season, taking 11 podium finishes (including wins in the final two races), and finished third in the championship, behind Tim Harvey and Michael Caine, but ahead of his team-mates.Jelley remained in the series with the same team for 2011, this was a late change as he had initially agreed to drive in the 2011 Le Mans Series.