Qualifying at Donington Park is due to commence at 14.05, with a field of 28 GB4 drivers all gunning for pole position for the penultimate rounds of the season.
All the action this weekend can be followed via the GB4 Live Timing page. Live timing will be available for qualifying, while live streams will be shown for all three races in the East Midlands.
Pace Performance's John O'Donnell set the quickest time in testing in the build-up to the event. The American-Korean driver set a 1m29.429s on Thursday, with Hillspeed's Enzo Hallman and Elite's Fred Green occupying the top three.
Friday's action featured a drying track in the morning, and Fortec's Franciszek Cegielski topped the times with a 1m29.743s. Green was up there again, as was new teammate for the weekend Yani Stevenheydens.
Fortec's Thomas Ingram Hill was fourth quickest on both days, while Dayton Coulthard topped two sessions on Thursday, and was fifth quickest yesterday.
KMR Sport's championship leader Alex O'Grady was 11th fastest on Thursday, but moved into the top-six on Friday.
The top-15 drivers on both days were covered by less than a second, suggesting one of the closest qualifying sessions of the year is in store.
GB4 Championship, partnered by the BRDC, Donington Park entry list:
3. Alex O'Grady, KMR Sport, Irish
4. Jamie Leverton, Nitrous Competitions ADM Racing, British
5. Yani Stevenheydens, Elite Motorsport, Belgian
6. Demitri Nolan, Hillspeed, American
7. Enzo Hallman, Hillspeed, Swedish
8. Thomas Ingram Hill, Fortec Motorsports, British
9. Romuald Bocquet, Scorpio Motorsport, French
10. Faris Organji, Scorpio Motorsport
11. Franciszek Cegielski, Fortec Motorsports, Polish
15. Lily-May Watkins, KMR Sport
17. John O'Donnell, Pace Performance, Korean-American
18. Torrin Byrne, Pace Performance, British
22. Yana Kapoor, Arden Motorsport
23. Holly Miall, KMR Sport, British
24. Michael Koh, Arden Motorsport, American-Singaporean
28. Dayton Coulthard, Douglas Motorsport, British
33. Jasser Iskander, Fox Motorsport, Saudi Arabian
35. Caitlyn McDaniel, Nitrous Competitions ADM Racing, American
36. Enzo Rujugiro, Fox Motorsport, South African
48. Archie Bullard, Fox Motorsport, British
51. Fred Green, Elite Motorsport, British
54. Conor Grant, Douglas Motorsport, Irish
76. Josh McLean, Pace Performance, British
77. Matan Achituv, Elite Motorsport, Israeli
87. Archie Davies, Scorpio Motorsport, British
88. Jordyn Martin, Fortec Motorsports, American
95. Solenn Amrouche, Arden Motorsport, French
99. Connor Willis, Hillspeed, American
