Lews Hamilton is starting to pull away from Daniel Ricciardo. Within a lap he has gone from 0.8 seconds ahead to 1.2.

Hamilton can get to the end of the race on the softs he is on. Ricciardo, on super-softs, will have to pit at some stage.

Image source, Getty Images

No action to be taken after that incident involving Sergio Perez and Lance Stroll.

That leaves Perez to focus on racing and race he does as he picks off Felipe Massa and Daniil Kvyat on successive corners to move into eighth. Brilliant stuff by the Force India driver!

Max Verstappen is on one as soon as the safety car goes in! He sweeps around the outside of Kimi Raikkonen and is up into third. Love him.

"What happened with me engine!?" screams Raikkonen. Power problems for the Ferrari?

Image source, Reuters

Valtteri Bottas spins! He's dropped right down to 11th from fifth. Big mistake.

The safety car is coming in at the end of this lap.

Image source, Reuters

The stewards are investigating the incident between Sergio Perez and Lance Stroll.

Meanwhile, Sebastian Vettel will face no action for being out of position on the starting grid.

"Really hard to keep these tyres warm," reports Lewis Hamilton.

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The Red Bulls have benefited from the safety car. Daniel Ricciardo, who has gone onto super-softs, is up to second while Max Verstappen - also on super-softs - is up to fourth. 

Kimi Raikkonen is third with Valtteri Bottas fifth and Sebastian Vettel sixth.

Image source, Getty Images

Mark Gallagher
BBC Radio 5 live Formula 1 analyst

Lewis Hamilton has really pulled a blinder there managing to keep his first place position behind the safety car. He is weaving left and right, left and right trying to get heat in those soft tyres. 

Fernando Alonso is told to remember to have a drink of water. "I have concentration enough to keep the car on the track," he snaps.

I wouldn't like to get into a round with Fernando Alonso. He drinks when he wants.

Big cheers from the grandstand in front of where Antonio Giovinazzi crashed as he manages to climb out of the Sauber and leap over the pitwall.

What a chaotic start to this race! 

Everyone has pitted. Race leader Lewis Hamilton has switched to softs. 

Tom Clarkson
BBC Radio 5 live commentator

Getting the front tyres to maintain heat on this track is going to be really hard and at the snails pace of the safety car might cause a few issues for all the teams. 

Oh no! Antonio Giovinazzi has crashed! 

He's smacked into the pit wall. He's OK, but continues a shocker of a weekend for the rookie after he crashed in qualifying.

Safety car is deployed.

Image source, Reuters

Mark Gallagher
BBC Radio 5 live Formula 1 analyst

This virtual safety car has had real impact at this critical point in the race. 

Sebastian Vettel pits - the only one of the front runners to do so - and goes for softs, as almost all of those behind him have done as well. 

Risky move? Nico Hulkenberg has spun and reports a lack of grip on those softs.

Yep, Sergio Perez tagged the right rear of Lance Stroll's car, sending him spinning. The Williams is out of the race.

There's a flurry of stops to ditch those inters. Nico Hulkenberg pits for softs. Going to the end?

Max Verstappen is on the move. He started 16th and has just passed Fernando Alonso to move into 11th. 

Sergio Perez has a puncture, did he tag Lance Stroll?

Image source, Getty Images

Mark Gallagher
BBC Radio 5 live Formula 1 analyst

It's not surprising in these conditions to see a car flying off the track like that - it looks like Stroll got a tap but we will keep an eye out for a replay. 

It's a shame as he worked hard to get himself into final qualifying. 

There's a Williams into the gravel! Lance Stroll has beached his car. 

Image source, Getty Images