Grosjean leads Silverstone practice

The Barwa Addax driver went to the top of the timesheets halfway through the 30 minute session with a 1m26.808s, and the time was good enough to stand until a red flag brought running to an end a couple of minutes ahead of schedule.

Andreas Zuber was second fastest for FMSI, his best lap just over 0.2 seconds shy of Grosjean's, with ORT's Karun Chandhok third.

A combination of incidents and technical problems mean that several drivers will go into qualifying with less track time than they might have liked, including both of ART's drivers after Nico Hulkenberg failed to complete a timed lap and Pastor Maldonado backed his car into the barriers at Copse.

Super Nova's Javier Villa was sidelined with what appeared to be an engine failure with 10 minutes remaining, and Arden rookie Sergio Perez spun in the closing minutes.

Pos  Driver               Team                Time       Gap
 1.  Romain Grosjean      Addax               1m26.808s
 2.  Andreas Zuber        Fisichella          1m27.025s  + 0.217s
 3.  Karun Chandhok       Ocean               1m27.315s  + 0.507s
 4.  Lucas di Grassi      Racing Engineering  1m27.377s  + 0.569s
 5.  Alvaro Parente       Ocean               1m27.425s  + 0.617s
 6.  Pastor Maldonado     ART                 1m27.514s  + 0.706s
 7.  Javier Villa         Super Nova          1m27.545s  + 0.737s
 8.  Vitaly Petrov        Addax               1m27.675s  + 0.867s
 9.  Davide Valsecchi     Durango             1m28.109s  + 1.301s
10.  Luca Filippi         Super Nova          1m28.295s  + 1.487s
11.  Jerome D'Ambrosio    DAMS                1m28.309s  + 1.501s
12.  Daniel Clos          Racing Engineering  1m28.361s  + 1.553s
13.  Roldan Rodriguez     Piquet              1m28.468s  + 1.660s
14.  Kamui Kobayashi      DAMS                1m28.486s  + 1.678s
15.  Diego Nunes          iSport              1m28.551s  + 1.743s
16.  Sergio Perez         Arden               1m28.619s  + 1.811s
17.  Giedo van der Garde  iSport              1m28.639s  + 1.831s
18.  Alberto Valerio      Piquet              1m28.662s  + 1.854s
19.  Edoardo Mortara      Arden               1m29.068s  + 2.260s
20.  Davide Rigon         Trident             1m29.190s  + 2.382s
21.  Michael Herck        DPR                 1m29.218s  + 2.410s
22.  Luiz Razia           Fisichella          1m29.375s  + 2.567s
23.  Nelson Panciatici    Durango             1m29.423s  + 2.615s
24.  Giacomo Ricci        DPR                 1m30.268s  + 3.460s
25.  Ricardo Teixeira     Trident             1m31.401s  + 4.593s
26.  Nico Hulkenberg      ART