The two part qualifying session at Silverstone is due to commence at 09.35 local time, with Deagen Fairclough leading the pack into this mornings action.
Qualifying one will form the grid for race one, while the second qualifying session, which is due to commence at 09.55, will form the race two grid.
Fairclough posted the fastest time of the two day test in the yesterday's second session, but the results from yesterday suggests an extremely close session could be in store.
The top-three drivers, headed by Fairclough, were within a tenth of a second, with Rodin's Abbi Pulling and Xcel's Lucas Fluxa all pushing him closely.
Fluxa's teammate Rowan Campbell-Pilling has also been a constant figure towards the front in the build-up, while VRD's championship leader Nikita Bedrin has yet to top a session, but always comes good in qualifying.
The lead 17 drivers in testing yesterday were covered by less than a second, suggesting that qualifying could be the closest of the year so far.
Click here to follow today's action via the GB3 live timing page. This will show all the updates from qualifying, as well as the live stream for this afternoon's opening race of the weekend.
GB3 Championship, partnered by the BRDC, Silverstone entry list
1. Maxim Rehm, Rodin Motorsport
2. Martin Molnar, Rodin Motorsport
3. Abbi Pulling, Rodin Motorsport
4. Jacob Micallef, Hitech
5. Yuhao Fu, Hitech
6. Deagen Fairclough, Hitech
7. Lucas Fluxa, Xcel Motorsport
8. Rowan Campbell-Pilling, Xcel Motorsport
9. Ricardo Baptista, Xcel Motorsport
10. Dante Vinci, Hillspeed
11. Peter Bouzinelos, Hillspeed
12. Aurelia Nobels, Hillspeed
17. Edu Robinson, Elite Motorsport
18. Flynn Jackes, Elite Motorsport
19. Kyuho Lee, Elite Motorsport
20. Nikita Bedrin, VRD Racing
21. Patricio Gonzalez, VRD Racing
22. Rodrigo Gonzalez, VRD Racing
24. Jack Taylor, Fortec Motorsports
27. Leon Wilson, Arden Motorsport
31. Jason Pribyl, Nitrous Competitions ADM Racing