Join us at 13:00 BST for qualifying who knows what the weather will bring.
Free Practice 3
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That's the end of the session and it is Fernando Alonso who tops the timesheets from Button, Grosjean, Vettel, Raikkonen, Hamilton, Maldonado, Perez, Kobayashi and Hulkenberg.
The yellow flags are withdrawn and Button goes second with a 1:32.320s on hard tyres and Vettel into fourth.
Hydraulics issue for Rosberg who is down in 16th and not on the track.
Pic stops again on the track but this time not on the racing line so no red flag. Why on two occasions he has not pulled onto the grass, only he knows.
Kobayashi was threatening Alonso's time but spins late in the lap as Raikkonen moves into third.
Perez off again at Becketts and he knocks off the front wing in the process.
Hamilton goes third in the McLaren with 1:32.560s behind Alonso and Grosjean. Maldonado into fourth.
There is a chance of a shower right at the end of this session as Button goes out.
Alonso spins sideways, coming out of the final corner, and does a three-point turn before returning to normal service.
Shortlived for Lotus as Alonso, with softs on the Ferrari, into top spot with a 1:32.167s lap.
The sun has come out at Silverstone and the track temperature has risen to 23C as Grosjean moves to the top of the times with 1:32.471s on hard tyres.
But Perez is now third on the harder tyres with Romain Grosjean 0.282s back in fourth in the Lotus.
Many teams running opposite tyre strategies on their cars to get some data but it is those on the softs who are setting the pace and Hamilton back into top spot with a 1:32.728s lap.
Schumacher goes off track at the final corner as Raikkonen improves his time.
Button now top with a 1:32.851s lap ahead of Hamilton. Alonso takes third in 1:33.271s despite a wobble at Becketts followed by Raikkonen who clocks a 1:33.334.
A fuel system issue was the reason for Pic's forced halt.
The sun is back out as Button resumes on softs with Alonso on hard rubber.
The marshals push Pic's car down the track and through a gap in the wall and the session re-starts.
Schumacher, Hulkenberg and Maldonado were on track when Pic stopped and returned to the pits. Red flag still in operation.
Charles Pic comes to a halt at the exit of Copse and a red flag with the Marussia parked on the side of the track.
That was shortlived as Lewis Hamilton betters that by over half a second with 1:33.084s.
Fernando Alonso now tops the order with a time of 1:33.606s.
Di Resta on the radio says he is concerned about his KERS unit.
Di Resta back on track, he has currently posted the slowest time.
Paul Di Resta spins on the damp patch at Becketts.
A hint of rain as Sergio Perez becomes the lastest driver to find the wet patch at Chapel.
Jenson Button on soft rubber and Lewis Hamilton on hard as Nico Rosberg moves to top of the pile with a lap of 1:33.733s.
The McLarens, Saubers and Caterham pair are on the track.
Eight drivers have currently set a time and Pastor Maldonado slots into second spot behind Schumacher with a time of 1:35.498s.
Michael Schumacher top of the sheets with a lap of 1:34.517s in the Mercedes.
Track temperature is 17 Celsius and almost instantly Kimi Raikkonen sees his Lotus in the grass as he clips a damp patch in the middle of Chapel.
A chance of rain for qualifying but FP3 will see the teams test the slick compounds as the clock begins.
Lewis Hamilton set the quickest time on Friday in a very wet second practice session with a lap of 1m56.345s but the teams will be looking forward to getting out on a dry track this morning.
Friday practice saw drivers only complete a handful of laps but it's dry at Silverstone this morning and lots of fans are here early to support the stars.
Welcome to final free practice for the British Grand Prix as Silverstone has 'strongly advised' fans holding public car park passes to stay away today because of the on-going traffic chaos caused by unprecedented levels of rain.