Ahead of today's qualifying session, the air temperature is 16 degrees C, while the track temperature is 25 degrees. It remains overcast, with some dark clouds in the distance, but it remains dry.

Williams topped the timesheets this morning, but nobody seriously expects them to be challenging for pole here this afternoon, not unless condition deteriorate.

For much of the weekend Red Bull has led the way, with Sebastian Vettel, in particular looking good. However, while the Brawn's have not come anywhere near to matching the pace of the Milton Keynes cars we don't believe for a minute that the Brackley team has run out of steam, let's not forget that ace strategist Ross Brawn is at the helm.

Therefore, while we believe that it will be a Red Bull on pole, the Brawn will be up there, with the Toyotas, Ferraris, Alonso and those nippy Williams.

The best times posted this morning were on the soft option, however, if the temperature rises the hard tyres could look more attractive.

Remarkably, despite the massive investment, said to be as much as half-a billion between the ten teams - only Ferrari is using KERS this weekend. So much for cost cutting.

The lights go green, and Kubica - slowest this morning - is first out, followed by Fisichella, Bourdais and Heidfeld.

Fisichella posts 1.732 and Heidfeld 21.431, while Kubica can only manage 25.145.

Bourdais goes quickest with a 21.105, only to be eclipsed by Sutil, who has looked impressive all weekend thus far. Glock goes second with a 21.073.

The crowd erupts as Button begins his first flying lap of the session, posting 21.235 to go fifth. Within seconds however, he's bumped down to seventh as Rosberg goes second and Raikkonen sixth.

It's a Toyota 1-2 as Trulli goes quickest (19.915) ahead of his teammate. However, moments later Button splits the duo, posting an impressive 19.967. Next time around, Trulli goes quickest in all three sectors, crossing the line at 19.356. Nakajima goes second.

A 19.228 sees Rosberg go second, as Raikkonen improves to fourth. Meanwhile, Trulli goes quickest in the first two sectors, finally crossing the line at 18.886.

Webber goes second, however, all eyes are on teammate Vettel who can only manage fourth (19.382).

Next time around, Webber goes quickest in the first sector, and again in the second, crossing the line at 18.763 to go quickest. Moments later, however, Vettel steals his thunder with a 18.685, as Hamilton gets all out of shape in Becketts.

Alonso goes fourth with an impressive 19.167, his teammate is currently twentieth.

BMW still struggling, Heidfeld fourteenth and Kubica sixteenth. Elsewhere, Webber re-takes the top spot with an 18.674.