Valtteri Bottas led Lewis Hamilton in a Mercedes one-two narrowly ahead of Ferrari’s Charles Leclerc in second practice at the British Grand Prix.
Bottas edged Hamilton by 0.069 seconds, with Leclerc just 0.197secs behind.
Hamilton had a scrappy day, making a series of errors and struggling to put a lap together until the key moment of his quick run in the second session.
Ferrari’s Sebastian Vettel was fourth, ahead of the Red Bull of Pierre Gasly and McLaren’s Lando Norris.
Max Verstappen, winner of the last race in Austria, had a poor run on soft tyre and low fuel and was only seventh fastest.
A new track surface coupled with windy conditions at Silverstone made life difficult for the drivers, many of whom made errors and ran wide or spun.
Hamilton and Vettel both went off at the fast Becketts sweeps, while Toro Rosso’s Alexander Albon and Williams’ Robert Kubica had problems at Brooklands and Luffield earlier in the lap.
On the long runs, when teams simulate race pace, the Mercedes appeared to have a half-second or so advantage over Red Bull, but Ferrari’s run plan meant it was hard to compare their performance.
It was a fractured day on which it was hard to read performance.
This article is from the BBC Sport website / bbc.co.uk – British GP: Valtteri Bottas top in second practice ahead of Lewis Hamilton
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