Verstappen bounced back from a low-key race on Friday to lead with stunning speed in third practice at Silverstone, Red Bull one-two.
's time of 1 minute 27.901 seconds was an impressive four-tenths of a second ahead of teammate Perez , while Le Carlisle's Ferrari was in third place.
Mercedes' upgrades seemed to bring them closer to the top two, Russell passed teammate Hamilton, with the top five separated by six tenths of a second, making for an interesting qualifying session.
Sainz was unhappy with the level of bounce in high-speed corners, with the Spaniard telling his Ferrari team it was no better than yesterday.
The Ferrari driver, who finished second last time out in Canada, was sixth, while McLaren's Norris again impressed in seventh, albeit 1.2 seconds off the pace.
Alfa Romeo's Bottas was only eighth behind, with Haas making huge gains overnight and Mick firmly in ninth. Alonso made it into the top ten, which featured seven different teams.
O'Connell followed in eleventh, with the heavily updated Albin showing even more impressively after the team found some solutions overnight.
Vettel ranked 12th, four places and three-tenths behind teammate Stroll, Zhou Guanyu ranked 13th.
Williams are quite satisfied with the performance of their upgraded racing machine , with only Albon running, with the Thai driver in 14th place.
Toro Rosso continues to struggle, as expected, Silverstone 's quick sweep of turns, Gasly and Tsunoda seventeenth and nineteen, with Daniel Ricciardo and Latifi supporting the timetable in Old Spec William Ms.
Qualifying will be held at 15:00 local time, and the weather forecast shows the possibility of rain.
