Shootout winner Brandon McCaughan started life in GB4 in perfect style, by taking a double pole position in qualifying at Oulton Park.
The Irishman's best lap of 1m35.419s towards the end of the session put him 0.070s clear of Elite Motorsport's Alisha Palmowski, with McCaughan's teammate Harry Burgoyne third.
McCaughan headed the times for much of the session, and found ways to trim a few tenths off his best time on each lap. Palmowski took over top spot halfway through the 15 minutes, but McCaughan's last effort was enough to secure his first pole in slicks and wings racing.
His consistency also ensured he took pole for race two, with a time just half a tenth away from his outright best.
Outside the top-three, Finn Harrison was next up for Elite Motorsport, 0.019s clear of Graham Brunton Racing's Callum Baxter, with Fortec's Linus Granfors just 0.045s further back.
Fox Motorsport's car racing debutant Branden Templeton was seventh quickest, and 0.024s clear of Arden's fellow racing newcomer Leon Wilson, with series returnee Chloe Grant ninth for KMR and Aussie Jack Taylor completing the top-10 in his Fortec machine.
The race two grid is equally close, with McCaughan separated by 0.049s on second quickest times. Burgoyne and Harrison are next up once more, with Granfors rising above Baxter, as Wilson jumps above Templeton. The race two grid top-10 is again completed by Grant and Templeton.
The first race of the weekend is due to commence at 17.10.
GB4 Championship, partnered by the BRDC, Oulton Park provisional qualifying result:
1. Brandon McCaughan, KMR Sport, 1m35.419s
2. Alisha Palmowski, Elite Motorsport, +0.070s
3. Harry Burgoyne, KMR Sport, +0.467s
4. Finn Harrison, Elite Motorsport, +0.571s
5. Callum Baxter, Graham Brunton Racing, +0.590s
6. Linus Granfors, Fortec Motorsports, +0.635s
7. Branden Templeton, Fox Motorsport, +1.317s
8. Leon Wilson, Arden Motorsport, +1.341s
9. Chloe Grant, KMR Sport, +1.481s
10. Jack Taylor, Fortec Motorsports, +1.896s
11. Megan Bruce, Fox Motorsport, +2.076s
12. Mayer Deonarine, Graham Brunton Racing, +2.103s
13. Marcus Luzio, Luzio.com, +2.238s
14. Dan Hickey, Fortec Motorsports, +2.372s
GB4 Championship, Qualifying second fastest times:
1. Brandon McCaughan, KMR Sport, 1m35.461s
2. Alisha Palmowski, Elite Motorsport, +0.049s
3. Harry Burgoyne, KMR Sport, +0.489s
4. Finn Harrison, Elite Motorsport, +0.537s
5. Linus Granfors, Fortec Motorsports, +0.688s
6. Callum Baxter, Graham Brunton Racing, +0.703s
7. Leon Wilson, Arden Motorsport, +1.317s
8. Branden Templeton, Fox Motorsport, +1.389s
9. Chloe Grant, KMR Sport, +1.582s
10. Jack Taylor, Fortec Motorsports, +2.039s
11. Mayer Deonarine, Graham Brunton Racing, +2.340s
12. Dan Hickey, Fortec Motorsports, +2.394s
13. Marcus Luzio, Luzio.com, +2.451s
14. Megan Bruce, Fox Motorsport, +2.782s