FORMULA 1 Live

- It's Button in top spot, from Barrichello in second and Mark Webber in third. Vettel comes in fourth, with Alonso fifth. Massa is sixth. Lewis Hamilton finishes in ninth.

0/66 BUTTON WINS THE SPANISH GRAND PRIX!!!! It's his fourth GP win of the season and he extends his championship lead.

1/66 Alonso is the next man past Massa, who is helpless to stop it happening.

1/66 Button begins his last lap in Barcelona!

2/66 Button laps Hamilton on his penultimate lap. The championship leader past the world champion - who saw that coming before the season?

3/66 Hamilton is in ninth by the way.

4/66 Vettel overtakes Massa and moves in fourth. Massa is just looking to hold on for fifth now, with his fuel consumption a real concern.

6/66 Button is lapping about 0.7 quicker than all the other drivers on the track. Barring a mistake, he'll win the Spanish GP.

6/66 No change in the leading pack to report. Glock is about 0.3 behind Hamilton in ninth.

10/66 Massa is being told he needs to watch his fuel usage or risk running out before the finish. "What can I do," he says, "I am trying to fight for a position."

11/66 Webber is closing on Barrichello. Meanwhile, Massa and Vettel and engaged in a battle for fourth.

14/66 This is Button's race to lose now. The Englishman is pulling away.

16/66 Barrichello pits for the third time. He comes out in second. Meanwhile, Mark Webber is up to third. Everybody on hard tyres now.

19/66 Button pits for the second and final time. He's in and out in 8.7 seconds. Barrichello leads, but remember he STILL HAS TO PIT AGAIN!

20/66 Hamilton is half a second behind Alonso in eighth. Meanwhile, Button is pulling away for Brawn.

23/66 Button leads Massa by four seconds, but Massa and Vettel both pit for the final time. They take on hard tyres.

26/66 Hamilton has gained a place to move into ninth.

27/66 "We are just dropping behind Jenson," says a technical man in Barrichello's earpiece. "We need to put in some low 23s."

29/66 Barrichello is now 10.8 seconds behind Button.

32/66 Barrichello's three-stop strategy is not looking too clever right now. Button's lead is now over nine seconds and Barrichello has a got a lot of work to do if he wants to catch him. Massa is currently in second by the way, with Vettel third. Barrichello is fourth.

33/66 Button's lead over Barrichello is just over eight seconds.

34/66 Hamilton has pitted and he's now in 10th. Barrichello pits and Button now leads in Barcelona!

38/66 Barrichello still has two stops left, while Button only has one. Therefore Barrichello really needs to pull a good deal further away from Button to avoid the championship leader overtaking him later on.

39/46 Barrichello leads from Button, with Massa third and Vettel in fourth.

41/66 Raikkonen: "It was something wrong with the controls."

43/66 Hamilton is in seventh. The world champion is going for a long strategy on fuel.

45/66 Button has lost ground. Barrichello now leads from Rosberg. Button is back in third.

46/66 We're back as we were after the top two pit. Barrichello leads from Button. Raikkonen meanwhile is forced out with what appears to be a hydraulics problem. Just 14 drivers left in the race.

47/66 Button is in and out of the pits, as is Barrichello. It's Barrichello who comes out quickest to extend his lead over his team-mate. Massa leads from Vettel for the time being, with Barrichello third and Jenson fourth.

49/66 Timo Glock is the first to pit for fuel. The sun is beating down on this Barcelona circuit.

50/66 Button and Barrichello are five seconds clear of Massa in third. Meanwhile, Raikkonen is having real go at passing Heidfeld.

52/66 Button beats Barrichello's time and edges closer to his Brawn team-mate.

53/66 Barrichello laps in 1:23.094 - the fastest so far.

56/66 Barrichello still leads for Brawn, with his team-mate Button in second. Meanwhile, Sutil on the crash: "Jarno span into my car at the front end. I couldn't really do anything about it...the first corner is always tricky here."

57/66 Kovalainen is out. The diagnosis is a gearbox issue.

58/66 Trulli: "Rosberg came back on the track too quickly and to avoid him I had to steer quickly and I span off."

59/66 Barrichello is holding his lead, with Button in second. Kovalainen has some problems, he's in the pits and his race could be over.

60/66 Hamilton takes Kovalainen to move into 12th. The KERS technology surely played a part in that move.

61/66 The safety car moves aside and we are back racing!

62/66 The safety car is bad news for Vettel, who was planning an early surge on light fuel.

63/66 Workers are still clearing debris from the track, as the cars cruise round in formation.

66/66 Barrichello takes Button on the opening straight and leads. Felipe Massa is in third. But the safety car makes an early appearance after Jarno Trulli's Toyota skids off and back on to the track. Adrian Sutil's Force India is involved in the ensuing mayhem and is forced out. Sebastien Bourdais and Sebastien Buemi of Toro Rosso are also out of the race.

66/66 AWAY THEY GO!!!

- The track is currently at 44 degrees, the hottest it's been all weekend.

- The way this track is set up we have a good stretch before the first corner, so it should be an exciting start.

- For those of you who missed qualifying, let me update you. Brawn's Jenson Button took a dramatic pole with the last lap of the session. Sebastien Vettel of Red Bull and Brawn's Rubens Barrichello were second and third quickest. Lewis Hamilton starts back in 14th.

- Good afternoon and welcome to our LIVE coverage of the Spanish Grand Prix in Barcelona!