Lewis Hamilton enjoyed a perfect start to his home British Formula One Grand Prix on Saturday while car troubles left teammate and championship leader Nico Rosberg stranded in the garage.
Australia's Daniel Ricciardo, fifth for Red Bull in the morning, was second quickest in the afternoon.
Triple world champion Hamilton was quickest in both practice sessions, with a best time of 1min 31.654 seconds on a cloudy and grey morning followed by a 1:31.660 after lunch.
Both times were quicker than the Briton's 2015 pole time of 1:32.248.