2014 British Formula 1 Grand Prix - First free practice

11:31
We will be back for second practice which begins at 2pm local time (GMT +1)
11:31
Stay tuned to the website for a full report plus the latest news and photos
11:30
Mercedes driver Nico Rosberg remains fastest, ahead of team-mate Lewis Hamilton and Ferrari's Fernando Alonso
11:30
The chequered flag comes out to signal the end of FP1
11:29
He continues without major drama
11:29
Vettel kicks up some dirt at the exit of the first corner
11:28
But he was in the dirty air of Juncadella's Force India
11:28
Replays show Alonso drifting his Ferrari through the final two corners
11:24
Lots of cars on track in the closing stages, but not many improvements being made
11:24
Frijns is gradually improving, but the car looks extremely difficult to drive
11:21
Frijns has posted a time, albeit it almost nine seconds slower than Rosberg
11:17
After a lengthy spell in the Caterham garage, Frijns returns to the track
11:17
"I think we're going to hurt the gearbox," adds Ricciardo
11:16
Ricciardo reports a technical problem and is told to return to the pits
11:15
We're now into the final 15 minutes of the session
11:15
The pace-setting Mercedes drivers are back out on track
11:09
Button and Kvyat are the only drivers on track at the moment
11:06
Ericsson's car has been removed and we're under green conditions once more
11:04
Here is a shot of the damage to the Brazilian's machine:
11:04
Massa is wandering around the Williams garage, as mechanics work to fix his car
11:02
He is out of the car and his session appears to be over
11:02
The Swede's car later became stuck on a verge while he attempted to rejoin the track
11:01
Ericsson has run off the circuit at Becketts
10:59
Hamilton was on a quicker lap, but backed off as it developed
10:58
Rosberg posts a 1:35.424 to increase his advantage to seven tenths
10:57
Alonso is third, from Ricciardo and Raikkonen
10:57
Hamilton slots into second position, a tenth down on team-mate Rosberg
10:55
"ERS is now working again," Rosberg is informed by his engineer
10:55
Van der Garde has a moment at the first corner, taking to the run off
10:54
He stays out, with the team keeping him up to date about the situation
10:54
Rosberg is told that he has an ERS problem
10:53
He goes sixth, splitting the Toro Rosso drivers
10:53
Vettel posts his first time of the day
10:49
Plenty of work going on in the Lotus garage, with Maldonado's car up on jacks
10:47
Kvyat displaces team-mate Vergne to go sixth
10:45
We're now into the second half of the session
10:44
He is followed by Raikkonen, Grosjean and Juncadella
10:44
Kvyat is the first driver back out on track
10:44
With the track clear again, the session resumes
10:43
On the subject of Marussia, Chilton reported oversteer during his early laps
10:42
10:40
So that is Wolff's session over, after just four laps
10:40
But her engineer confirms that the car has a terminal engine problem
10:39
Wolff returns to the Williams garage, as does her car
10:32
So we could see her back out later in the session, if the problem is easy to rectify
10:32
During the stoppage, a recovery truck is returning Wolff's car back to the pits
10:30
10:29
What a disastrous start for Williams...
10:29
The Brazilian, thankfully, is unharmed, and begins the short walk back to the pits
10:28
Replays show Massa taking too much kerb on the exit of the corner, before sliding uncontrollably into the barriers and damaging both ends of his car
10:28
The session has now been red flagged
10:27
Massa has had a massive accident at the exit of Stowe
10:27
Rosberg goes fastest, ahead of Alonso and Raikkonen
10:26
"It feels like we're overheating the fronts," says Button
10:25
Williams reports that it is investigating Wolff's suspected oil pressure issue
10:24
Hamilton goes second, 0.285 seconds adrift of Button
10:23
Gutierrez slots into third, just ahead of Massa
10:23
Raikkonen up to second for Ferrari
10:22
That's devastating for the Scot, whose session could well be over
10:21
She reports an oil pressure problem over the radio
10:21
Wolff has stopped her car at the exit of Vale
10:20
Massa is second, from Rosberg and team-mate Button
10:20
Button moves to the front on 1:38.412
10:18
Ericsson posts the first time of the session, lapping in 1:50.811
10:17
Plenty of drivers getting practice starts in at the end of the pit lane
10:15
Ericsson, Button and Wolff head out again
10:19
Mechanics arrive at the scene to push his car back to the garage
10:16
Maldonado has stopped at the end of the pit lane
10:12
A lull in activity as the teams prepare for their first proper runs of the day
10:11
His thoughts can be found on the main page of the website
10:11
Kobayashi is hopeful that the Dutchman will be able to drive the team forward
10:10
Christijan Albers, Caterham's new team boss, is on the pit wall this morning
10:08
All 22 drivers have now been out for exploratory laps
10:06
Bottas watches on as Wolff brings his Williams back to the pit lane
10:04
Just Massa and Hamilton yet to leave the pit lane
10:03
Although this is her first official F1 outing, she has previous testing experience with the team
10:03
Some final tweaks going on in the Williams garage before the team releases Wolff
10:01
Plenty more drivers heading out for early install runs
10:00
Magnussen is the first driver out in his McLaren
10:00
The green light comes on at the end of the pit lane and FP1 gets underway
09:58
The driver Williams alluded to was Italy's Giovanna Amati
09:56
09:55
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
09:54
Remember, you can get in touch with our live reporting team throughout the session
09:54
Daniel Juncadella is in for Nico Hulkenberg at Force India, Susie Wolff for Valtteri Bottas at Williams, Giedo van der Garde for Adrian Sutil at Sauber and Robin Frijns for Kamui Kobayashi at Caterham
09:52
There are four driver changes for this morning's first 90-minute session
09:51
The first comes between Turns 5 and 6, with the second following on the Hangar Straight
09:51
Meanwhile, there are also two DRS zones in place
09:50
In terms of tyres, Pirelli has brought its Medium and Hard compounds to Britain
09:49
Now we're all set for another weekend to begin...
09:48
Mercedes was again the team to beat in Austria, but Williams provided a firm challenge
09:48
It's a pleasant day at the Silverstone circuit, with air and track temperatures sitting at 17°C and 25°C respectively
09:47
Hello and welcome to live text coverage of opening practice for the British Grand Prix!