2014 British Formula 1 Grand Prix - Second free practice

12:46
Hello and welcome to live text coverage of the second practice session for the British Grand Prix at Silverstone
12:48
It's a pleasant day at the circuit with temperatures currently at 22c. Track temperatures are at 36c.
12:49
The first practice session ended a couple of hours ago with Mercedes's Nico Rosberg fastest
12:50
But several other drivers had issues. Williams, in particular, endured a dismal session
12:51
Susie Wolff stopped on track after four laps, while Felipe Massa shunted his car on the exit of Stowe
12:52
It's been a busy lunchtime for Lotus.
12:52
After no timed laps for Pastor Maldonado this morning, the team has fitted a new Power Unit to his E22
12:53
In terms of tyres, the white Medium and orange Hard compounds are in use this weekend
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The Mediums were not used in FP1, although expect them to be fitted to cars during qualifying simulations later
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There are two DRS zones in operation this weekend - one on the Wellington Straight and the other on the Hangar Straight
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Remember, you can get in touch with our live reporting team throughout the session
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There is an interactive Facebook panel on the right-hand side of this page, while we can be found on Twitter via the @GPUpdate handle
12:57
Four regular drivers will be back in their cars for this session after handing over to reserve drivers earlier.
12:57
Nico Hulkenberg, Valtteri Bottas, Adrian Sutil and Kamui Kobayashi will be back in their regular seats
13:00
The green light is on and the 90 minute session gets going
13:01
Home racer Max Chilton is first out in the Marussia
13:03
13:04
The Venezuelan is now on track, having notched up just two slow laps this morning
13:04
Massa remains in the garage as Williams bids to repair his FW36
13:05
Meanwhile, team-mate Bottas sets the first time of the session, a 1.39.032
13:06
Button now moves to the front with a 1.37.608 as Sutil struggles with some snap oversteer through Luffield
13:09
Drivers remain on the Prime tyre during these early stages as Button lowers his benchmark to a 1.37.414
13:11
Hulkenberg complains that the Force India is feeling 'very oversteery' and cites the wind as the main unsettling factor
13:12
Bottas moves to the front before Alonso goes 1.3s fastest
13:13
Our trackside man reports that the Williams is looking super-smooth through the Maggots/Becketts complex
13:14
While the handling of the Caterham is all over the shop
13:14
Magnussen moves up to second as Button complains of rear tyre wear
13:15
Rosberg moves up to second position, with Hamilton in third
13:16
Replays show early leader Alonso locking up under braking for Village
13:17
@MikeSeymourF1, watching at Becketts, reports that Perez saved a huge moment through the corner
13:18
Mercedes and Williams stand out through the complex, with Ferrari and McLaren there or thereabouts. The Lotus, meanwhile, is bouncing all over the place
13:19
Rosberg moves to the front with a 1.35.645
13:19
It's a Mercedes 1-2 up front as Hamilton goes 0.2s quicker than Rosberg
13:20
20 minutes in and the Red Bull duo of Vettel and Ricciardo take to the circuit for the first time in this session
13:22
The reigning champion goes seventh fastest on his first flying lap
13:24
On his next lap Vettel's RB10 gets very twitchy through Becketts but he improves to fifth
13:26
Ricciardo pops up into fourth place in the sister Red Bull as Kvyat's Toro Rosso gets incredibly squirrely exiting Stowe. He saves it, much to the satisfaction of watching Red Bull reserve Antonio Felix da Costa
13:27
13:28
Raikkonen runs wide at Abbey and kicks up a load of dust
13:29
Massa thanks Williams for their repair work via the radio before setting out on his first flying lap. He goes 14th
13:30
Ericsson is first onto Options and he improves by 1.1s to go 19th
13:32
Massa goes seventh in the repaired Williams
13:32
Gutierrez up to sixth in his Sauber
13:35
Grosjean has been off and continued at Luffield
13:39
Rosberg, on Mediums, returns to P1 with a 1:34.736
13:40
But Hamilton responds, going two tenths faster than his team-mate
13:41
Perez breaks into the top 10 on his latest lap
13:45
We're into the second half of the session
13:46
Replays show Magnussen having a moment at Becketts
13:46
The McLaren driver does well to hold onto his car
13:48
Alonso has edged ahead of Ricciardo for P3
13:52
A smoother afternoon for Williams, with Bottas up to sixth and Massa 10th
13:54
Just over half an hour on the clock and most drivers are working through longer runs
13:55
Button is up to seventh, just ahead of team-mate Magnussen
13:59
Hulkenberg reports some understeer on his latest run
14:00
Hamilton has stopped at the exit of The Loop
14:00
He is out of his car and marshals are on the scene
14:01
Replays show Hamilton losing power shortly after leaving the pits
14:02
Hamilton's car is recovered and the track is green once more
14:05
Ericsson has brought his car into the support paddock pits
14:06
It looks like more technical problems and another curtailed session for the Swede
14:10
Hamilton has made his way back to the pits
14:11
Rosberg, meanwhile, continues to work through race preparation
14:13
Ricciardo, Hulkenberg and Bianchi the only drivers in the pits
14:14
Bianchi's car has been hit by technical problems
14:17
Vergne has stopped with a loose left-front wheel
14:17
Replays show the Frenchman encountering the issue through the first corner
14:18
That was a rather scary moment, but he is unharmed and out of his car
14:19
Vergne suspects that the issue arose after contact with the kerb at the final turn
14:22
With Vergne's car cleared, we're green again
14:23
Lots of damage at the rear of Bottas' Williams
14:23
Replays show bodywork flying off along the Hangar Straight
14:23
A loss of oil pressure is believed to be the cause of Hamilton's stoppage
14:29
Just a few seconds left on the clock
14:30
The chequered flag comes out
14:30
Hamilton stays fastest, ahead of Mercedes team-mate Rosberg and Ferrari driver Alonso
14:31
Stay tuned to the website for a full report plus the latest news and photos
14:31
We will be back for Saturday's final practice session at 10am local time (GMT +1)