Lewis Hamilton fastest in rain-hit final free practice
Lewis Hamilton boosted his prospects of pole position at the British Grand Prix when he was fastest in final free practice at Silverstone on Saturday morning.
Hamilton's team-mate Valterri Bottas was within touching distance of both men, and only +0.074 seconds behind top spot to suggest the jostle for the starting grid could be tighter still on Saturday afternoon.
All the best times were recorded before the rain tumbled down after 40 minutes of the hour-long session.
Kimi Raikkonen was fourth in his Ferrari.
Hamilton was significantly faster than Friday's best of 1:28.496 and the quickest yet at the former World War Two airfield.
Renault's Nico Hulkenberg was a promising fifth.
Sebastian Vettel (Ferrari) - Grand Prix of Great Britain 2017Getty Images
Bottas will collect a five-place grid penalty after qualifying, due to an unscheduled gearbox change, as will Red Bull's Australian Daniel Ricciardo for the same reason.
McLaren's Fernando Alonso, meanwhile, collected a massive 30-place drop for various engine penalties, ensuring the Spaniard starts at the back -- a familiar experience for the double champion this season.
The penalties look like turning qualifying into a straight battle between Hamilton and the Ferraris in a session likely to be overcast but with a decreasing likelihood of rain after steady morning drizzle.
A pole for three-times world champion Hamilton would put him just one away from Michael Schumacher's all-time record of 68 and come as a timely boost after two races off the podium that have left him 20 points behind Vettel.
Pole is not crucial at Silverstone, however, although every winner at the circuit since 2000 has started from fourth place or higher. Hamilton has taken the top slot for the last two
Final Free Practice Session from the Formula One British Grand Prix at Silverstone on Saturday
- 1. Lewis Hamilton (Britain) Mercedes 1:28.063
2. Sebastian Vettel (Germany) Ferrari 1:28.095
3. Valtteri Bottas (Finland) Mercedes 1:28.137
4. Kimi Raikkonen (Finland) Ferrari 1:28.732
5. Nico Huelkenberg (Germany) Renault 1:29.480
6. Daniel Ricciardo (Australia) Red Bull - TAG Heuer 1:29.612
7. Romain Grosjean (France) Haas - Ferrari 1:29.819
8. Max Verstappen (Netherlands) Red Bull - TAG Heuer 1:29.904
9. Felipe Massa (Brazil) Williams-Mercedes 1:29.959
10. Stoffel Vandoorne (Belgium) McLaren 1:30.088
11. Fernando Alonso (Spain) McLaren 1:30.138
12. Esteban Ocon (France) Force India - Mercedes 1:30.172
13. Kevin Magnussen (Denmark) Haas - Ferrari 1:30.270
14. Jolyon Palmer (Britain) Renault 1:30.302
15. Sergio Perez (Mexico) Force India - Mercedes 1:30.416
16. Daniil Kvyat (Russia) Toro Rosso - Renault 1:30.504
17. Carlos Sainz Jr (Spain) Toro Rosso - Renault 1:30.515
18. Pascal Wehrlein (Germany) Sauber - Ferrari 1:30.621
19. Marcus Ericsson (Sweden) Sauber - Ferrari 1:30.630
20. Lance Stroll (Canada) Williams-Mercedes 1:31.358