Here are the reactions from Brawn, Red Bull, BMW Sauber and McLaren.

Brawn GP:
Jenson Button: "You don't win the world championship and feel relief, you feel ecstatic. All the memories, good and bad, go through your mind, not just from this year, but previous years in the sport, especially this year. I had such a great start to the season and then the last few races were pretty stressful for me because the pace was there, but we struggled a few times. It made it very difficult for me because mentally that hurts when you are not able to get the best out of the car that day, but also I read too many newspapers and magazines and there were some negative comments. It's tough when you are a driver and you are at the top of your game, but the great thing is there's a lot of good stuff that has been written about this year, and so there should be. This team has done staggeringly well and what we've achieved this season after the winter we've had is exceptional, and I don't think there has been a season like it in Formula One. It's great to be sat here as world champion and I personally think I thoroughly deserve it. I've been the best over 16 races and that's what world titles are all about. I am it. I am a world champion and I'm going to keep saying it, especially after a race that for me was the best I've driven in my life. I know it's because of the emotion involved with it, because also I knew I had to make it happen, and that's why I'm sat here as the world champion. I'm going to enjoy this moment like you would not believe, and you can do that when you've won."

Rubens Barrichello: Jenson won it, and he deserved to do it. But he won it over the first seven races, and I think the second half of the championship was mine. It was a true fight and I fought really hard. I kept going, kept myself alive, and I'm really pleased. 'm pleased for Jenson as a friend and as a great champion, and if I didn't win, he should have won it, so well done to him."

Red Bull
Mark Webber: "I'm happy with that! You never know in the first stint of a race what's going to happen, although I knew Rubens (Barrichello) and Robert (Kubica) were a bit shorter than me. I was matching Robert's pace to start with and when they made their pit stops, I knew I had a clear run to make a gap to start my second stint. I just cleared Jenson (Button) on my outlap, which was good too. I was just making sure the tyres were comfortable for the whole stint. I was a little bit panicky in the second stint as Robert started closing, although my pace was not too bad and I knew he was quite short in the middle stint. I was then able to control the gap to Robert and he backed off towards the end, which gave me a nice run home. It's fantastic feeling to win again. As a team we've had quite a few victories this year off the back of some tough seasons, but today has confirmed second place for us in the Constructors' Championship. We're very proud of what we have achieved this year as a team - I want to thank Renault as well, the engines have been very good and they're not easy environments for them to work in. Congratulations to Jenson and also to Brawn on clinching the Championships today after a good fight. It was a good weekend for the Australians, as Jason Crump won the World Speedway Championship last night. He's a close friend of mine and he won it under difficult conditions, so a good weekend."

Sebastian Vettel: "I think there is a guy at Brawn who is happier than me today. All in all it was a good race - starting from the back and finishing fourth. We were helped by some people crashing, but I think fourth was the maximum we could do today. Without the problems in yesterday's qualifying, we could have won the race, but we didn't so there's not much more to say. The pressure wasn't too much during the race, I was just focusing on each lap. I knew that Jenson was just ahead or behind me and would score points for the Championship - but you don't really think about it until the last couple of laps. Before that you never know what can still happen. At one point I was praying for rain, there was the smell of rain, but it didn't come. Congratulations to Jenson and Brawn, I think they did the best job this year."

BMW
Robert Kubica: "The basis for today's result was laid yesterday when we decided to take a gamble and drive the wet qualifying with a low-downforce set-up. This went well in Q1, but was difficult in Q3. Although some people were disappointed with eighth place yesterday, I was quite pleased. Today we had a good and consistent pace. I was surprised at the beginning that it was quite easy to follow Rubens Barrichello and Mark Webber. But I had to reduce the engine revs after about 15 laps because the water temperature was too high, and I had to avoid the tow of the guys in front of me. After my first pit stop I was unlucky because I got stuck behind four cars. At that stage Mark was able to increase the gap. This is a great result in a difficult season, and I really hope that I will see this team on the grid next year."

Nick Heidfeld: "My start wasn't perfect but I saw there were very tight fights and decided it was better to stay clear of trouble. Then straight away there were crashes in turn two and at the exit of turn five. I was able to overtake a couple of cars, and among them was Romain Grosjean who didn't really play fair. I was worried I could lose my front wing then. After I had left him behind me I closed the gap to Sebastian Vettel but could not overtake him. Then I was due for my first pit stop. I wondered how quick the car was and soon I received the call to save fuel and to save more fuel, but it was too late. I ran dry in turn 8. At least it is good that the team has something to be happy about today."

McLaren
Lewis Hamilton: "It was an incredible race for me and I'm so happy. Starting at the back was a completely different feeling from last year. This time, I wasn't involved in the championship outcome, but I'm incredibly happy for Jenson. I've been down to congratulate him, his team and his family. As for my race, I was so far behind on the grid that I didn't expect to finish on the podium, but I fought so hard and kept pushing like crazy throughout the whole race. It feels like a win when you come through fighting for positions all the time with good overtaking manoeuvres at the end. I just kept pushing and did one qualifying lap after another, which was very hard. The team kept telling me to keep going at that speed and our strategy was excellent. This was a great team effort."

Heikki Kovalainen: " While the results don't show it, I had a good race out there today. I lost about six or seven laps' worth of fuel with the incident with the fuel-hose. And, without that problem, my first stint would have been longer and would have allowed me to get ahead of some of the cars ahead of me. I chased Kobayashi for a long time, and, even though I had the pace, I couldn't launch an attack on him because my rear tyres had degraded quite a bit by then. Still, I'm very pleased that our team has now moved ahead of Ferrari in the constructors' world championship. And I really feel I could have added to that total without my problems in the pitlane today. I'm already looking forward to the next race in Abu Dhabi. My aim there will be to go flat-out to ensure we consolidate that position and finish the season in third place."