A problem for Fernando Alonso right at the end. He's parked up in an escape road after a message flashed up on his wheel saying "Anti stall - pull clutch".

Lewis Hamilton managed just 10 laps in this session but Nico Rosberg has had plenty of track time as he completes his 34th lap with time almost up in the session...

Image source, getty

Daniel Ricciardo had a bit of a whinge about traffic earlier, and now it's Max Verstappen's turn to complain about it after he gets held up by Pacal Wehrlein.

"I am always in traffic," says the teenager.

"It's a street circuit, mate. Deal with it."

That's him told.

Image source, Getty Images

Mark Gallagher
BBC Radio 5 live Formula 1 analyst

The thing with Lewis Hamilton is whenever he has suffered a setback he has come out fighting. 

Into the final 10 minutes and this is how the top 10 looks:

1) Rosberg 2) Raikkonen 3) Verstappen 4) Ricciardo 5) Vettel 6) Hulkenberg 7) Hamilton 8) Sainz 9) Alonso 10) Kvyat

Image source, Getty Images

Confirmation that Lewis Hamilton's session is indeed over.

Image source, Getty Images

Daniel Ricciardo is circulating in the mid-1:50s on these long runs, a couple of tenths quicker than Nico Rosberg.

The Australian isn't happy with Felipe Nasr after a recent trip to the pits. "He was doing DRS and all sorts," he says.

"Think you need to remember, it is Felipe Nasr," is the reply.

Bit harsh!

Image source, Getty Images

Lots and lots of concerned looking faces as work continues on Lewis Hamilton's car. The Briton himself looks fairly relaxed, though, having returned to the garage to take a look at the data screens.

Pencil moustache, swept back black hair. Hero.

So no race runs for Lewis Hamilton as a far from ideal Friday looks to have come to an end. Those Singapore gremlins rearing their heads again?

Meanwhile, the rest of the field are well into long runs territory now.

Tom Clarkson
BBC Radio 5 live commentator

It is a hydraulic issue for Lewis Hamilton. I think it is an odd one this in that it raises its head when he is on track but when they do all the system checks in the garage everything looks fine. The team is going to have a proper look at this and it does look like it is session over for Hamilton.

Problem for Lewis Hamilton? He is out of his Mercedes and walks out of the garage shaking his head. He'd been complaining about high temperatures near his feet earlier...

Image source, AP

Andrew Benson
Chief F1 writer

At the start of this season, it did not look for Jolyon Palmer to have anything but a one-season F1 career. The Englishman was picked by the previous owners of the Renault team and the new ones had no enthusiasm for retaining him. But as time has gone by, Palmer’s steady, committed approach has given him a glimmer of hope that he might retain his seat. He has now out-qualified team-mate Kevin Magnussen in three of the last four races. Renault are expected to promote their reserve driver - and Manor racer - Esteban Ocon into one of the cars but the other driver in 2017 is less set. “I know I’m in the mix but we’ll just see how things pan out,” Palmer said. “So yeah, nothing changes for me really: just keep doing the job, I’ll know when I know.

"Every race from now on is a chance to show what I can do. It’s a track I really like here and I feel like I’m driving the best I’ve driven all season at the moment. The results haven’t really shown in the last couple of races but I feel good within myself. I’ve had some good success here before, so hopefully keep on the good form at the moment and I think this one will suit our car a little bit more as well. Hopefully we will be able to challenge a little bit higher and I can show what I can do a bit more.” 

Palmer said Renault could expect something like the seventh row of the grid in Singapore, rather than the back as they were at the last race in Monza. “Row 11; Monza was pretty much everything that we don’t want from a track. It was high speeds. Renault has made good steps with the engine but we’re still behind Ferrari and Mercedes. And then slow-speed corners and kerb riding, so it was everything we don’t want. Here, the straight-line speed is not so much; the corners are more suited to us. Even though it’s a street circuit, it’s reasonably smooth, so I think this could be one of our best of the year.”

Kevin Magnussen is currently 16th quickest, with Jolyon Plamer 17th.

Image source, Getty Images

There's been plenty of moustache chat on BBC Radio 5 live in light of incoming F1's chairman Chase Carey's wonderful effort. We've now established Jenson Button was the last F1 driver to have a moustache but who had the finest tache in F1 history? Hard to see past Nigel Mansell, surely?