Hamilton wins after passing pole man Rosberg into Turn One on first lap
Hamilton leads drivers' standings for first time this season, six points clear of Rosberg
P1 Hamilton, P2 Rosberg, P3 Ricciardo, P4 Vettel, P5 Verstappen, P6 Raikkonen
Button retires after being penalised over radio communications
Palmer spins Renault out of points
...softs for Lewis Hamilton and he is back out in the lead. Max Verstappen and then Nico Rosberg also pit, the pair rejoining in sixth and second respectively.
All of the top six have pitted now apart from Kimi Raikkonen, who is fifth.
Image source, APDaniel Ricciardo immediately tries to pick off Valtteri Bottas, attacking the Williams at Turn 5. He attempts to get round the outside but Bottas keeps him at bay.
Meanwhile, Lewis Hamilton pits from the lead...
Image source, Getty Images
Tom Clarkson
BBC Radio 5 live commentator
That was brilliant timing for that pit stop - Vettel has come out just in front of team-mate Kimi Raikkonen and has a clear track in front of him. That could make the difference in terms of getting ahead of Verstappen.
Red Bull follow Ferrari's lead as Daniel Ricciardo pits from third. It's is also softs for the Australian and he rejoins in sixth, ahead of Sebastian Vettel.
Max Verstappen is temporarily elevated up to third, but he has yet to make his first stop.
Sebastian Vettel pits from fifth, slaps on set of softs and gets back out ahead of his team-mate Kimi Raikkonen in eighth.
Image source, ReutersJenson Button: "So the brake pedal going to the floor is not a safety issue?
"I think someone needs to read up what is safe and what isn't."
I think the Briton is deeply unimpressed with his drive-through penalty following those earlier radio communications.
We're looking at a two horse race that is increasingly looking like becoming a one-horse race. The Mercedes are lapping a full second quicker than the Red Bulls.
Sean Harrison: A drive-through penalty for giving Button a reliability radio message? People in charge at FIA should be sacked. Rank incompetence.
Quixotic Geek: FIA, your radio rules are stupid, how much longer do we have to tell you this before you'll listen. Fix it.
William Lloyd: The radio comms rules are too tight. Stupid penalties all round. (Unless it's Rosberg. Just saying).
Adrian Kellers: These radio comm rules are absolute garbage.
Tom Clarkson
BBC Radio 5 live commentator
If I were Red Bull, I would be bringing in one of my cars now and get the undercut. You can get to the end of the race from here on a two-stop strategy.
Another strong lap from Lewis Hamilton. He was three tenths of a second faster than Nico Rosberg and his advantage is now 2.6s.
The Mercedes are increasingly in a battle of their own, with Daniel Ricciardo a further four seconds down the road.
BBC Radio 5 Live
Lewis Hamilton takes the lead at the start of the Hungarian Grand Prix
Lap 10/70
1) Hamilton 2) Rosberg 3) Ricciardo 4) Verstappen 5) Vettel 6) Alonso 7) Sainz 8) Bottas 9) Hulkenberg 10) Grosjean
Tom Clarkson
BBC Radio 5 live commentator
They are being very, very stringent with this radio rule - a lot of the drivers don't like it. These hybrid power units are so complicated, it's a big ask for them not to be given some advice when there's a problem. Button can argue he wasn't being coached how to drive the car.
Jenson Button's day goes from bad to worse. He's got a drive through penalty for "unauthorised communication".
Image source, gettyJenson Button has been relieved from his "race from hell" and pits to make the switch to soft tyres.
Meanwhile, Kimi Raikkonen is climbing. He's up to 11th and eight tenths of a second behind Romain Grosjean.
Max Verstappen comes on the radio to tell his team: "I'm driving like a grandma."
Not really a criticism of himself as it turns out. The Flying Dutchman is following closely behind team-mate Daniel Ricciardo and is none-too-subtly suggesting that he could be going faster if he was released.
As it stands, Lewis Hamilton leads Nico Rosberg, with Daniel Ricciardo third and Max Verstappen fourth. Sebastian Vettel is fifth with Fernando Alonso sixth.
Image source, Rex FeaturesStephen: Feels like a year since Hamilton made a good start to race
Luke Pettitt: Keeping a eye on race 6000ft up in the Julian Alps. Go Lewis!
Amit Madalia: Kimi is the top runner on softs at the moment and up to 11th. Could bring himself into play later on.
Jenson Button continues to drop back down the field. Race over? No, he's told to stay out.
"This is going to be a race from hell," he fumes.