1 Raikkonen Ferrari 1m18.634s
2 Verstappen Red Bull 1m19.438s
3 Sainz Toro Rosso 1m19.837s
4 Bottas Mercedes 1m19.845s
5 Hulkenberg Renault 1m19.885s
6 Perez Force India 1m20.116s
7 Stroll Williams 1m20.335s
8 Hamilton Mercedes 1m21.319s
9 Grosjean Haas 1m21.429s
10 Ericsson Sauber 1m21.670s
11 Alonso McLaren 1m22.731s
12 Wehrlein Sauber 1m25.143s
Massa Williams No time
Palmer Renault No time
Carlo Sainz also on track now for Toro Rosso after vaulting up the timesheets in the closing stages of the morning to clock the third-quickest lap and the team's best of the winter.
It was a reasonably handy time from the STR12 on ultrasofts, which certainly looks the part for F1 2017 even if the team's winter has included too much time spent in the garage than they'd have liked.
1 Raikkonen Ferrari 1m18.634s
2 Verstappen Red Bull 1m19.438s
3 Sainz Toro Rosso 1m19.837s
4 Bottas Mercedes 1m19.845s
5 Hulkenberg Renault 1m19.885s
6 Perez Force India 1m20.116s
7 Stroll Williams 1m20.335s
8 Hamilton Mercedes 1m21.319s
9 Grosjean Haas 1m21.429s
10 Ericsson Sauber 1m21.670s
11 Alonso McLaren 1m22.731s
12 Wehrlein Sauber 1m24.940s
Massa Williams No time
Palmer Renault No time
Hamilton sets a personal best time in the first sector, but his middle and third sectors are a little slower. Still, it's an overall improvement – to a 1m20.705s.
Palmer emerges in the Renault having taken over duties from Hulkenberg. Hopefully the beleaguered Brit gets some proper running.
Palmer's ahead of Wehrlein on the leaderboard after a 1m24.293s.
Raikkonen's appeared in the Ferrari for the first time this afternoon, but a lap later rolls through the pitlane doing some burnouts. Appears the other side. Perez, Hamilton, Grosjean, Palmer and Wehrlein are also on track.
The Haas of Romain Grosjean is also out on track and they need the mileage today after two stoppages before lunch.
By all accounts, it appears that the team's bugbear of 2016 - uncooperative brakes - has returned with a vengeance. The team have also found the VF-17's handling to become more difficult in the warmer conditions of the afternoon here in Spain.