Boullion fastest

The Frenchman was fastest in both practice sessions, taking his Pescarolo Judd around the Northamptonshire circuit in a best time of one minute 34.50 seconds, just over a quarter of a second quicker than the second best time of the day by Aston Martin Racing's Harold Primat.

Olivier Panis was third for Oreca, though he was some way back with 1:35.122, while Kolles Audi driver Christian Bakkerud produced the fourth quickest time of the day with a 1:35.396 that which saw him become one of the few drivers to go quicker in the early evening session.

Strakka Racing's Danny Watts was fifth with a best of 1:35.604, but the British driver will be pleased with his consistency in going just seven-tenths slower in the early-evening session.