Hillspeed's Freddie Slater returned to the top of the times in the second Free Practice session of the day at Spa-Francorchamps.
The British driver lapped the Belgian Grand Prix venue in a time of 2m13.236s, just under a tenth of a second away from the best time set so far this week in session one by teammate Kanato Le.
Le was second quickest this time around, 0.467s in arrears in the 30-minute session, which was interrupted midway through after Stefan Bostandjiev went off at turn 13 and brought out the red flags.
Hitech TGR's Nikita Johnson posted the third quickest time in session two, ahead of JHR's Kai Daryanani, moving up a position compared to the morning runs.
VRD Racing's Hugo Schwarze was fifth quickest this time around, 0.062s away from Daryanani's time and 0.073s clear of Rodin's Alex Ninovic.
The third Hillspeed car of Hiyu Yamakoshi was only 0.059s off Ninovic's effort, and 0.033s ahead of the second Hitech of Keanu Al Azhari. Argenti with Prema's Yuanpu Cui and Rodin's Gianmarco Pradel completed the top-10.
The third Free Practice session is due to commence at 14.00 local time (1pm UK) before qualifying begins at 17.10.
GB3 Championship, partnered by the BRDC, Spa-Francorchamps Free Practice 2 result:
1. Freddie Slater, Hillspeed, 2m13.236s
2. Kanato Le, Hillspeed, +0.467s
3. Nikita Johnson, Hitech TGR, +0.748s
4. Kai Daryanani, JHR Developments, +0.981s
5. Hugo Schwarze, VRD Racing, +1.043s
6. Alex Ninovic, Rodin Motorsport, +1.116s
7. Hiyu Yamakoshi, Hillspeed, +1.175s
8. Keanu Al Azhari, Hitech TGR, +1.208s
9. Yuanpu Cui, Argenti with Prema, +1.361s
10. Gianmarco Pradel, Rodin Motorsport, +1.630s