Kubica flies in practice 2

Kubica was quickest in 1:21.082 seconds, over 1.2 seconds ahead of Renault's Giancarlo Fisichella.

Fisichella had a scare, though, as he spun at high speed when he touched the brakes at the end of the 320 kilometres per hour Hangar straight, but re-joined the track after driving along the escape road next to the circuit.

Third was Williams test driver Alex Wurz, with Honda tester Anthony Davidson the best Briton and Italian Jarno Trulli next up for Toyota.

Felipe Massa endured a mistake-strewn session in his Ferrari.

Massa went off the road and onto the grass twice - outbraking himself at the Abbey and Club chicanes, and then stalled in the pitlane.

He still managed to set the sixth fastest time - one spot ahead of world champion Spaniard Fernando Alonso, in a Renault, and two places ahead of his teammate Michael Schumacher, who himself put two wheels on the grass exiting Abbey late in the session.

McLaren were the most disappointing performers of the day just two weeks after Kimi Raikkonen's performance at the Monaco Grand Prix.

The Finn was 21st quickest after completing only four laps, while his teammate Juan Pablo Montoya was 14th.

Toro Rosso tester Neel Jani spun his Toro Rosso into the gravel trap on the outside of the circuit while exiting Priory corner in an incident almost identical to that of his compatriot Giorgio Mondini in the earlier session.

And Red Bull's Christian Klien was another driver to be caught out by Silverstone's slippery track surface as he suffered a double spin at the same point just minutes later.

Pos  Driver        Team                     Time              Laps
 1.  Kubica        BMW-Sauber          (M)  1:21.082           29
 2.  Fisichella    Renault             (M)  1:22.294 + 1.212    3
 3.  Wurz          Williams-Cosworth   (B)  1:22.300 + 1.218   30
 4.  Davidson      Honda               (M)  1:22.310 + 1.228   34
 5.  Trulli        Toyota              (B)  1:22.437 + 1.355   17
 6.  Massa         Ferrari             (B)  1:22.476 + 1.394   19
 7.  Alonso        Renault             (M)  1:22.603 + 1.521   13
 8.  M.Schumacher  Ferrari             (B)  1:22.825 + 1.743   14
 9.  Webber        Williams-Cosworth   (B)  1:23.099 + 2.017   15
10.  Barrichello   Honda               (M)  1:23.104 + 2.022   17
11.  R.Schumacher  Toyota              (B)  1:23.114 + 2.032   22
12.  Doornbos      Red Bull-Ferrari    (M)  1:23.140 + 2.058   25
13.  Monteiro      MF1-Toyota          (B)  1:23.194 + 2.112   23
14.  Montoya       McLaren-Mercedes    (M)  1:23.199 + 2.117   10
15.  Albers        MF1-Toyota          (B)  1:23.499 + 2.417   14
16.  Mondini       MF1-Toyota          (B)  1:23.529 + 2.447   25
17.  Button        Honda               (M)  1:23.707 + 2.625   18
18.  Villeneuve    BMW-Sauber          (M)  1:23.750 + 2.668   13
19.  Rosberg       Williams-Cosworth   (B)  1:23.816 + 2.734   16
20.  Heidfeld      BMW-Sauber          (M)  1:23.895 + 2.813   14
21.  Raikkonen     McLaren-Mercedes    (M)  1:23.915 + 2.833    4
22.  Liuzzi        Toro Rosso-Cosworth (M)  1:24.012 + 2.930   19
23.  Klien         Red Bull-Ferrari    (M)  1:24.158 + 3.076   12
24.  Speed         Toro Rosso-Cosworth (M)  1:24.167 + 3.085   19
25.  Coulthard     Red Bull-Ferrari    (M)  1:24.392 + 3.310   13
26.  Jani          Toro Rosso-Cosworth (M)  1:24.666 + 3.584   22
27.  Sato          Super Aguri-Honda   (B)  1:25.870 + 4.788   26
28.  Montagny      Super Aguri-Honda   (B)  1:26.248 + 5.166   22
29.  Yamamoto      Super Aguri-Honda   (B)  1:27.908 + 6.826   27

All Timing Unofficial