This is why Vettel lost time on his pit-stop.

On that Alonso rant at the traffic lights - who here hasn't had a sweary episode at a set of lights before?

And, while I'm at it, why is the first person at traffic lights the last person to see them turn green.

It completely defies the laws of physics.

Felipe Nasr, having initially looked like he was retired, came back out briefly 10 laps down on the field.

It turns out he's done it to serve a 10-second penalty for his collision with Palmer and has now definitely retired.

So, Rosberg has 15 seconds on second-placed Hamilton.

Neither have pitted yet.

Hamilton is about 20 seconds in front of Vettel.

Fernando Alonso has a massive sweary rant at his team. And we get to see why.

They change his tyres in the pits and stand back to let him go, but the traffic light above his head stays red and he loses seconds waiting to go.

Tom Clarkson
BBC Radio 5 live commentator

Lewis Hamilton has told the team to not worry about the start and says it was his fault. Very rarely this year have we seen both Mercedes make blinding start.

And now Vettel is in. What tyres will he take? Super-softs too, just like Raikkonen.

It wasn't a slick stop and he's coming out alongside his team-mate. He's just in front of the Finn and rejoins in third with Raikkonen back up to fourth.

Image source, EPA

Raikkonen pits - he goes for another set of super-softs - pace over preservation for the Finn who is out in sixth.

Hamilton up to third.

Image source, Reuters

Sho Rahman: Think Hamilton's chances of winning the race are already over. He has to finish 2nd to minimise the damage though.

PhilSlocombe: Puff of smoke from Hamilton's car before poor start; strange how these gremlins always hit Hamilton's car, never Nico's car

Bottas has emerged on some new soft tyres and immediately puts them to good use, coasting past Button and Sainz in one corner to go up to P9.

Nico Rosberg is almost 10 seconds ahead of Sebastian Vettel in second.

Hamilton is 15 seconds adrift of his team-mate.

Lewis Hamilton is told to pick up the pace for three laps by his Mercedes team.

Not exactly hammertime, more gentle-bosh-time.

Sauber might be getting Felipe Nasr ready to come back out - he's probably about five laps down on the field.

BBC Radio 5 Live

Listen again to BBC Radio 5 live commentary as Lewis Hamilton makes a terrible start to fall down to sixth.

Wasted rears is never a good thing, in any walk of life.

But Hamilton's hope was that the life of those soft tyres would give him an edge - not if they're wasted.

"The rears are wasted already."

Kimi Raikkonen, after being told to ease off earlier, is asked to up the pace by Ferrari to give him a better chance of emerging from the pits in a decent position.

This is a picture from the start, where Lewis Hamilton dropped from pole to sixth.