Xcel Motorsport's Lucas Fluxa topped the times as pre-event preparations for this weekend's rounds at the Silverstone Grand Prix circuit got underway on Thursday.
The Spaniard's best lap of 1m50.358s came in the second of the day's three sessions, putting him over three tenths of a second clear of the field.
His teammate Rowan Campbell-Pilling was his nearest rival, having topped the second session late on before Fluxa took over. The British driver was 0.390s clear of Bedrin, who was quickest in session three, but was third overall courtesy of his session two lap.
Rodin duo Maxim Rehm and Abbi Pulling were next up, with Rehm topping the slower first session, while Pulling was fifth in sessions one and two, and fourth in the final test.
Hitech's Jacob Micallef completed the top-six on his first visit to Silverstone, a tenth of a second quicker than Rodin's Martin Molnar, who was one of only two drivers to set their best lap in session three.
VRD's Patricio Gonzalez was next up in eighth, just two thousandths behind Molnar and 0.056s ahead of Hitech's Deagen Fairclough, who was the other contender to set their best lap in the last session.
Elite's Flynn Jackes completed the day's top-10, which was covered by 1.262s.
A total of 24 cars took to the track at Silverstone today, with series newcomer Edu Robinson posting the 17th quickest time for Elite Motorsport. Arden also ran an extra car with an unnamed driver, while VRD handed a test to Indonesian driver Nadeem Rustombi in the team's fourth car. The GB3 test car was also in action with Zak Taylor at the wheel.
Testing resumes tomorrow with three more sessions at the British Grand Prix venue.
GB3 Championship, partnered by the BRDC, Silverstone Thursday test combined result:
1. Lucas Fluxa, Xcel Motorsport, 1m50.358s
2. Rowan Campbell-Pilling, Xcel Motorsport, +0.326s
3. Nikita Bedrin, VRD Racing, +0.716s
4. Maxim Rehm, Rodin Motorsport, +0.733s
5. Abbi Pulling, Rodin Motorsport, +0.886s
6. Jacob Micallef, Hitech, +1.024s
7. Martin Molnar, Rodin Motorsport, +1.067s
8. Patricio Gonzalez, VRD Racing, +1.069s
9. Deagen Fairclough, Hitech, +1.125s
10. Flynn Jackes, Elite Motorsport, +1.262s
11. Kyuho Lee, Elite Motorsport, +1.298s
12. Dante Vinci, Hillspeed, +1.304s
13. Rodrigo Gonzalez, VRD Racing, +1.361s
14. Ricardo Baptista, Xcel Motorsport, +1.394s
15. Leon Wilson, Arden Motorsport, +1.481s
16. Jack Taylor, Fortec Motorsports, +1.536s
17. Edu Robinson, Elite Motorsport, +1.664s
18. Aurelia Nobels, Hillspeed, +1.873s
19. Yuhao Fu, Hitech, +2.022s
20. Peter Bouzinelos, Hillspeed, +2.143s
21. Jason Pribyl, Nitrous Competitions ADM Racing, +2.420s
22. Nadeem Rustombi, VRD Racing, +5.158s