Red Bull Racing's Sebastian Vettel in the pits during the third practice session of the British Grand Prix at Silverstone Circuit, Silverstone.

Red Bull Racing's Sebastian Vettel during qualifying for the British Grand Prix at Silverstone Circuit, Silverstone.

Vodafone McLaren Mercedes driver Lewis Hamilton during qualifying for the British Grand Prix at Silverstone Circuit, Silverstone.

Police tape blocks the route up a slope in a campsite outside Silverstone before qualifying for the British Grand Prix at Silverstone Circuit, Silverstone.

Red Bull Racing's Mark Webber in the pits during the third practice session of the British Grand Prix at Silverstone Circuit, Silverstone.

Scuderia Ferrari Fernando Alonso (right) after qualifying in pole position for the British Grand Prix while Vodafone McLaren Mercedes Lewis Hamilton looks at a the Red Bull car at Silverstone Circuit, Silverstone.

Spectators make her way through the mud at a camping site near to Silverstone Circuit before qualifying for the British Grand Prix.

Ferrari's Fernando Alonso during the third practice session of the British Grand Prix at Silverstone Circuit, Silverstone.

Vodafone McLaren Mercedes driver Lewis Hamilton over takes Ferrari driver Fernando Alonso during qualifying for the British Grand Prix at Silverstone Circuit, Silverstone.

Red Bull Racing's Mark Webber during the third practice session of the British Grand Prix at Silverstone Circuit, Silverstone.

Vodafone McLaren Mercedes Jenson Button during qualifying for the British Grand Prix at Silverstone Circuit, Silverstone.

Fans make their way around the track during qualifying for the British Grand Prix at Silverstone Circuit, Silverstone.

Fans walk past queuing traffic on the A43 outside Silverstone before qualifying for the British Grand Prix at Silverstone Circuit.

Sahara Force India's Paul Di Resta during qualifying for the British Grand Prix at Silverstone Circuit, Silverstone.

Spectators, with mud covered footwear, arrive for qualifying for the British Grand Prix at Silverstone Circuit, Silverstone.

Sahara Force India driver Paul Di Resta in the garage during the third practice session of the British Grand Prix at Silverstone Circuit, Silverstone.