Postpublished at 14:01
Daniil Kvyat, under pressure from Sergio Perez, has a wobble at the Bus Stop and heads in, taking on soft tyres and is back out in 10th.
Summary
Hamilton wins, Rosberg 2nd, Grosjean 3rd
Kvyat 4th, Perez 5th, Massa 6th
Vettel suffers dramatic tyre explosion while running third
German furious at tyre failure
Williams penalised for mixing tyre compounds
Hulkenberg, Maldonado, Ricciardo, Sainz out
Postpublished at 14:01
Looking to the skiespublished at 14:00 British Summer Time 23 August 2015
Hamilton 'in control'published at 13:58 British Summer Time 23 August 2015
Ben Edwards
BBC F1 commentator"Hamilton was six-tenths faster than Rosberg on the last lap - it does seem that he is controlling this pretty well."
Postpublished at 13:58
Valtteri Bottas is back into the points as he picks off Marcus Ericsson.
Meanwhile, Lewis Hamilton is putting the pressure on to Nico Rosberg, his latest lap is more than half a second faster than his team-mate's effort and the gap currently stands at 4.6s.
Can they last until the end?published at 13:55 British Summer Time 23 August 2015
Tom Clarkson
BBC F1 pit-lane reporter"The degradation of tyres should be getting better because of this cloud cover - without the sun the track temperature is starting to come down."
Rain coming?published at 13:55
Ominous looking clouds have positioned themselves above Spa now. Is the rain coming?
Fernando Alonso is informed over the radio that rain is "100km away" but a shower could arrive before the end.
Get involved #bbcf1published at 13:53 British Summer Time 23 August 2015
Get involved #bbcf1published at 13:52 British Summer Time 23 August 2015
Phillip Murphy: Brilliant drive from Grosjean so far.
Nick Bennetts: Those dark clouds rolling in towards Rivage look promising.
Jack of all trades: I wonder where Rosberg would be if he didn't have a bad start? P1? He appears to have the better race pace. Especially on the prime.
Postpublished at 13:51
Lewis Hamilton advantage over Nico Rosberg is now down to 2.2s as we pass the halfway mark in the race.
Team radio - Hamilton not happypublished at 13:50 British Summer Time 23 August 2015
Lewis Hamilton: "Nico's definitely closed since the VSC."
Cars are supposed to hold their position and not gain any time on each other during the virtual safety car.
Virtual Safety Car endingpublished at 13:50
Lots of pit stops as a result of that stop for Daniel Ricciardo. Romain Grosjean, from third, Felipe Massa and Max Verstappen are among the drivers to head in.
Virtual Safety carpublished at 13:47
The virtual safety car is signalled and it is for Daniel Ricciardo's Red Bull. He suffers what looks like system failure at the Bus Stop chicane. His race is over.
Postpublished at 13:47
Romain Grosjean is right on Sergio Perez's tail, He gets the green light over team radio to attack and obliges, sweeping past through Eau Rouge and he is into third. Podium on the cards?
Get involved #bbcf1published at 13:45 British Summer Time 23 August 2015
Send us your snaps from Spa
Williams' frustationpublished at 13:45 British Summer Time 23 August 2015
Tom Clarkson
BBC F1 pit-lane reporter"The error with Bottas's tyres is very frustrating for everyone and not least head of performance Rob Smedley, who says that Williams have to cut out errors like this if they are to become a top team."
Postpublished at 13:45
So it is business as usual up top as Lewis Hamilton leds Nico Rosberg. Hamilton's lap seems him round in 1:55.241, with Rosberg's lap at 1:55.451.
Not much between them and the German is going to need to find something extra, with the gap currently 3.3s.
'Perpetual penalties' for Williams?published at 13:43 British Summer Time 23 August 2015
Postpublished at 13:42
"We'll carry on like this: right rear is prime, all others are option," Valtteri Bottas is informed over team radio, confirming he will continue with one medium tyre and three soft tyres on his Williams.
Interesting...
Postpublished at 13:41 British Summer Time 23 August 2015
Mind the gap, Lewispublished at 13:41 British Summer Time 23 August 2015
David Coulthard
BBC F1 co-commentator"Hamilton needs to mind the gap to Rosberg. It was just 3.4 seconds last time around. Ideally you want as big a gap as possible."