Five days after Bottas' world championship hopes nosedived with a puncture two laps from the finish of the British Grand Prix, the Finn returned to Silverstone to prove that incident was now firmly in the past.
Bottas topped the timesheet with a lap of one minute 26.166secs, and for the first time this season at the end of FP1, leaving Hamilton 0.138s adrift, and with the rest of the field again trailing.
To try and add a different dimension to this weekend's event, tyre supplier Pirelli is running a softer step across its three compounds compared to those used last weekend.
It meant that Bottas' time was 1.3s quicker than Max Verstappen's leading FP1 time from a week ago, but with the offset being the rapidity in which the rubber degraded, notably in the hot conditions, with track and air temperatures of 43 and 27 degrees centigrade respectively.
Red Bull's Verstappen, who took advantage of Bottas' tyre woes on Sunday to finish second behind race-winner Hamilton, had to content himself with third quickest on this occasion, and 0.727s down.
The Dutch driver finished just 0.049s ahead of Racing Point's Nico Hülkenberg, back in the RP20 again following a second positive Covid-19 test, and hoping to race on Sunday after a mechanical issue forced him out of the British GP prior to the start.
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