Sergio Perez is back out and puts in the first flying lap of the afternoon - a 1:24.780.

Almost 45 minutes in and Pascal Wehrlein and Lance Stroll decide it is time to get involved.

Excitement in the pit lane... there's a cat wandering about there. 

Genuinely the best thing to happen so far this afternoon.

We've still only had Sergio Perez out on the track. He did three laps before disappearing back into the pits.

That marvellous picture of Engelbert Humperdinck will have to linger a little longer.

Image source, Getty Images

V:  I presume Alonso was in his trailer at lunchtime blaring out "If I could turn back time" from Cher...    

RageF1: Please Release Me - Englebert Humperdinck,

I'm amazed it took us this long to get a mention of the great Englebert to be honest.

Image source, .

F1 journalist Dan Knutson: Like last year, brakes continue to be a problem for the Haas team.

“We are working hard with Brembo trying to solve the issue,” Romain Grosjean said of the brakes during the lunch break, “but I am not 100 percent confident and happy with the brake feeling and the retardation and the modulation, so we are really trying to work hard with everyone on board to try get the best of it.”

The problem is affecting the confidence of the drivers. 

“It is confidence,” Grosjean said. “Whenever you go on a qualifying lap or you push yourself you forget a bit the confidence side and you just go for it. When you do a race, over 66 laps in Barcelona for example, having a better feeling and a better control is going to be key to gaining a few seconds at the end of the race.”

Sergio Perez is not a cake fan. He's out on the track now in the Force India.

I've found a possible reason for the inactivity, there's CAKE in the paddock. 

Sauber's development driver Tatiana Calderon is celebrating turning 24 today.

Image source, .

While we wait for someone - anyone - to head onto the track you may or may not have noticed that our vote has closed. We asked which team has got you most excited in pre-season testing and the overwhelming choice was Ferrari with 50% of the votes.

As is the norm, there's no mad rush to get back out on the track, leaving that poor green-flag holding marshal waving at no-one.

The final four hours of testing gets under way!

It promises to be a fascinating afternoon. Will Mercedes respond to Ferrari's pace in the morning? Will McLaren manage more laps than the recovery truck?

Time to find out.

Max Verstappen did the 33 laps in the morning - only Fernando Alonso did fewer - but did the second quickest time. More mileage to come this afternoon?

The session restarts in a couple of minutes.

Image source, .

Lance Stroll and Marcus Ericsson share the honours for completing the most laps before lunch - both are on 59. Just the 19 for Fernando Alonso.

Andrew Benson
Chief F1 writer

Pre-season testing times are notoriously unreliable indicators of true form because there are so many possible variables in the specification of the cars.

But the growing feeling within F1 is that Ferrari may start the season with a genuinely competitive car for the first time since 2008.

Image source, AP

A depressing sight.

Can McLaren get Fernando Alonso out for longer this afternoon.

There's less than five hours of testing left and it seems like they've still got so much work to do.

1 Kimi Raikkonen (Fin) Ferrari 1:18.634 ** 

2 Max Verstappen (Ned) Red Bull 1:19.438 ** 

3 Valtteri Bottas (Fin) Mercedes 1:19.845 *** 

4 Nico Hulkenberg (Ger) Renault 1:19.885 *** 

5 Sergio Perez (Mex) Force India 1:20.116 *** 

6 Carlos Sainz (Spa) Toro Rosso 1:20.281 ** 

7 Lance Stroll (Can) Williams 1:20.335 * 

8 Romain Grosjean (Fra) Haas 1:21.429 * 

9 Marcus Ericsson (Swe) Sauber 1:21.670 ** 

10 Fernando Alonso (Spa) McLaren 1:22.731 *** 

*** = ultra-soft tyre; ** = super-soft; * = soft

Andrew Benson
Chief F1 writer

Kimi Raikkonen has set a new fastest lap of pre-season testing, beating the mark laid down by his Ferrari team-mate Sebastian Vettel on Thursday.

The Finn’s lap of one minute 18.634 seconds was 0.39secs quicker than Vettel’s time and is 0.686secs faster than anything champions Mercedes have managed.

It underlined the growing impression that Ferrari could be a genuine threat at the first race in Australia on 24-26 March.

Meanwhile, McLaren-Honda’s dismal winter continued with two on-track stoppages.

Fernando Alonso suffered the same intermittent electrical problem that caused two on-track stoppages for team-mate Stoffel Vandoorne on Thursday. The Spaniard ended the morning slowest of 10 drivers, 4.1secs behind Raikkonen.