Lando Norris topped first practice for the British Grand Prix, and Lance Stroll and his McLaren teammate Oscar Piastri.
Yuki Tsunoda and Piastri suffered disrupted sessions. Tsunoda spun into the gravel at Luffield, and Piastri had hydraulics issues.
The first practice session got underway at a cloudy Silverstone after rain earlier in the day.
Four rookies, Franco Colapinto, Isack Hadjar, Jack Doohan, and the newly signed Haas driver for 2025, Ollie Bearman, got an opportunity to impress in FP1.
Fernando Alonso went to the top of the timesheets with a 1:31.193 five minutes into the session before being usurped by Max Verstappen.
18 of the 20 cars chose to run apart from the two Williams of Alex Albon and Colapinto.
The red flags were deployed 10 minutes into the session after Tsunoda got stuck in the gravel at Luffield. He lost the rear on entry.
George Russell sat atop the timesheets with a 1:28.888 ahead of his Mercedes teammate Lewis Hamilton while Tsunoda’s RB was cleared from the circuit.
The session resumed with 44 minutes remaining, and a flurry of cars joined the track as Russell was the first onto the circuit.
The British driver improved his time to set a 1:28.156 and was quickly followed by Verstappen, going two-tenths of a second slower.
Bearman broke into the top five while using the grippiest soft tyre, going sixth-tenths slower than Russell’s pace-setting 1:28.046.
The times continued to tumble as Hamilton went fractionally faster than his teammate, and the Mercedes duo held the two fastest times.
Spaniard Carlos Sainz broke the 1:28 barrier for Ferrari, setting a 1:27.925 in the weekend’s opening session.
Verstappen switched to the medium tyres with 25 minutes to go and improved to set the fastest time, sporting a striking one-off livery.
With 20 minutes to go, Verstappen was usurped by Piastri. The Australian used the soft tyre but only went a tenth quicker than the Red Bull driver, who drove on the more durable medium compound.
Further down the order, both Williams ran the soft tyre, and Colapinto was just seven-tenths of a second slower than his teammate Albon.
Norris suffered a quiet session for McLaren before breaking into fourth place with a quarter of an hour left.
The British driver improved by a further two-tenths of a second to go to the top of the timesheets ahead of his teammate Piastri.
Stroll split the two McLarens on the soft tyre with 10 minutes to go as light rain fell over the circuit.
Piastri toured back to the pit lane very slowly in the final few minutes after reporting a hydraulic problem. The 23-year-old stopped at the pit lane entry, a worrying end to his session.
Norris was held up by Red Bull driver Hadjar at the exit of Abbey as the French driver did not realise the McLaren was coming at high speed, but the two drivers avoided contact.
Norris topped the session ahead of Stroll and Piastri. Verstappen ended up fourth, just in front of Russell, Alonso and Hamilton. The two Ferraris finished 8th and 9th, with Leclerc ahead of Sainz and Esteban Ocon in P10.
The four rookies had productive sessions; Bearman set the 14th-fastest time with Doohan in P17 ahead of Colapinto and Hadjar in 18th and 19th place.