Force India duo Sergio Perez and Esteban Ocon were then seventh and eighth, split by 0.172secs, with McLaren Honda's Stoffel Vandoorne ninth and Grosjean tenth for Haas.
Valtteri Bottas and Daniel Ricciardo found out this out the hard way today at Silverstone. After some expletives being shouted at in the Ferrari team radio, Raikkonen can swap his tires and rejoin in fourth place behind teammate Vettel. It was really quick and the team did a ideal strategy for both of us, I think, me and Lewis.
Speaking on the grid, directly after going quickest in qualifying, Hamilton added: "I feel awesome, especially with a great crowd like this - I hope you liked the lap?".
Valtteri Bottas, who started ninth after a gearbox penalty caused him to drop five grid places, was slowly making his way up through the grid.
Daniil Kvyat and team-mate Carlos Sainz tussled through Becketts with the Russian running wide, as he rejoined the circuit, he collided with Sainz and the pair span. Damage to Sainz's auto saw him retire and the Safety vehicle deployed.
The Frenchman, no stranger to penalties himself, believes the no-call by race stewards stemmed from the fact Hamilton was second in the driver standings. "I'm interested to see what happens in the next race, I guess the Hungarian track should suit our vehicle better".
Vettel was fourth fastest in the second practice session, behind Ferrari teammate Kimi Raikkonen, after an experimental transparent screen was removed from the vehicle in the morning. Two laps from the end, I don't know what happened - before Turn Six under the tunnel, the tyre didn't explode, but the rubber part came off suddenly.
Vettel was fourth behind Bottas when his tyre deflated through Brooklands and caused him to run off the track.
With Bottas going long on softs and then switching to supersofts, there was nothing Vettel could do to hold off the Mercedes driver, who moved ahead at Stowe on lap 43.
Raikkonen's tyre tread appeared to come apart with two laps to go, while Vettel suffered a total failure one lap later.