They're forming uppublished at 13:03 British Summer Time 17 September 2017
Seconds to go...
Hamilton wins Ricciardo 2nd, Bottas 3rd
Hamilton's 60th career win sees him open up 28-point title lead
Both Ferraris, Verstappen, Alonso crash out in chaotic wet start
First lap accident to be investigated after the race
Kvyat, Ericsson, Hulkenberg, Magnussen also out
Jamie Strickland
Seconds to go...
A standing start in wet weather coming up.
In 2017, this is a rare thing indeed!
"Visibility terrible," says Romain Grosjean in the Haas.
Tom Clarkson
BBC Radio 5 live commentator
The medical car has just run past me down the pit lane and a lot of spray came up from that so there is a lot of standing water on the track.
"First ever wet night race," says the latest communique from race control.
A bit of history unfolding, ladies and gents.
Lots and lots of spray.
Tom Clarkson
BBC Radio 5 live commentator
It is chucking it down with rain now and there is a huge decision the drivers have to make about what tyres they start on.
Lewis Hamilton has been told "all the cars ahead are on inters".
The radio guys and gal have been cranked into life and are ready to call what could be a hugely entertaining Singapore Grand Prix.
Jack, Tom, Jennie, have fun.
Listen in using the audio tab at the top of this page.
Now it becomes a question of what tyres the drivers will go on.
Inters is the safe choice, but will anyone risk slicks? In this heat, when the rain stops the track will dry very fast.
Andrew Benson
BBC Sport’s chief F1 writer in Singaore
On strategy, the race is coming up as a pretty clear one-stop - although Daniel Ricciardo said it was on the cusp of a one or a two. A one-stop computes as quicker whether degradation on the ultra-soft is high or low in the first stint, but the higher it is, the more a two-stop comes into play. It’s probably a switch to super-softs after the first stint on the ultras, but Mercedes were strong on the softs and may well lean towards them.
Race control confirms "low-grip conditions", so the rain is making its presence felt now...
Seems fairly conclusive....