Fortec Motorsports' Franciszek Cegielski ended Friday testing at Silverstone by posting the quickest GB4 time of the week in the final session of the day.
The Polish contender lapped the British Grand Prix venue in a time of 2m02.261s, putting him just three thousandths of a second clear of Elite Motorsport's Israeli contender Matan Achituv, who topped the second session of the day, but went faster in session three.
Nitrous Competitions ADM Racing's Luke Hilton, who was fastest on Thursday, completed the Friday top-three covered by just half a tenth of a second.
Session one pace setter Fred Green was fourth quickest thanks to his session two lap, and only 0.013s further back from Hilton.
The remainder of the top-10 all recorded their best laps in the final session, with Fortec's Thomas Ingram Hill next up, 0.045s away from Green's effort and just under two tenths of a second clear of the lead Pace Performance car of John O'Donnell.
The American-Korean was 0.020s faster than the lead Douglas Motorsport car of Conor Grant, with KMR Sport's championship leader Alex O'Grady next up, 0.017s in arrears.
Grant's teammate Dayton Coulthard and Hillspeed's title challenger Enzo Hallman completed the top-10, which was split by just 0.626s.
The top-13 drivers were all within a second of the fastest time, heading into qualifying tomorrow at 11.20.
GB4 Championship, partnered by the BRDC, Silverstone Friday test combined times:
1. Franciszek Cegielski, Fortec Motorsports, 2m04.127s
2. Matan Achituv, Elite Motorsport, +0.003s
3. Luke Hilton, Nitrous Competitions ADM Racing, +0.053s
4. Fred Green, Elite Motorsport, +0.066s
5. Thomas Ingram Hill, Fortec Motorsports, +0.111s
6. John O'Donnell, Pace Performance, +0.293s
7. Conor Grant, Douglas Motorsport, +0.313s
8. Alex O'Grady, KMR Sport, +0.330s
9. Dayton Coulthard, Douglas Motorsport, +0.509s
10. Enzo Hallman, Hillspeed, +0.626s
11. Josh McLean, Pace Performance, +0.677s
12. Archie Davies, Scorpio Motorsport, +0.813s
13. Torrin Byrne, Pace Performance, +0.842s
14. Jordyn Martin, Fortec Motorsports, +1.099s
15. Connor Willis, Hillspeed, +1.120s
16. Archie Bullard, Fox Motorsport, +1.299s
17. Emmilio Valentino Del Grosso, Elite Motorsport, +1.304s
18. Jamie Leverton, Nitrous Competitions ADM Racing, +1.383s
19. Michael Koh, Arden Motorsport, +1.408s
20. Faris Organji, Scorpio Motorsport, +1.659s
21. Holly Miall, KMR Sport, +1.689s
22. Demitri Nolan, Hillspeed, +1.800s
23. Romuald Bocquet, Scorpio Motorsport, +2.061s
24. Lily-May Watkins, KMR Sport, +2.377s
25. William Rohan, Arden Motorsport, +2.405s
26. Jasser Iskander, Fox Motorsport, +2.437s
27. Solenn Amrouche, Arden Motorsport, +2.608s
28. Caitlyn McDaniel, Nitrous Competitions ADM Racing, +3.162s
29. Enzo Rujugiro, Fox Motorsport, +5.178s
