The Englishman, who posted a 67, is two shots clear of Swede Alex Noren and South African Charl Schwartzel with Northern Irish duo Graeme McDowell and GarethMaybin a further shot adrift.
McDowell's Northern Irish compatriot GarethMaybin will join him in the weekend's final rounds having made the cut on the number at seven over thanks to an eagle at the 18th to close his second round.