| # | Driver | Team | Championships | Career wins | FIA Category | Racer Rating |
|---|---|---|---|---|---|---|
| 1 | Leon Wilson | Arden Motorsport | 0 | 2 | — | 3,920 |
| 2 | Jack Taylor | Fortec Motorsports | 0 | 2 | — | 3,881 |
| 3 | Isaac Phelps | Elite Motorsport | 0 | 4 | — | 3,793 |
| 4 | Aryaman Bansal | Elite Motorsport | 1 | 5 | — | 3,767 |
| 5 | Daniel Guinchard | Hillspeed | 0 | 3 | — | 3,534 |
| 6 | Alexandros George Kattoulas | Elite Motorsport | 0 | 1 | — | 3,446 |
| 7 | Leonardo Juncos | Hillspeed | 0 | 1 | — | 3,336 |
| 8 | Lucas Blakeley | Douglas Motorsport | 0 | 4 | — | 3,257 |
| 9 | Tom Ingram Hill | Fortec Motorsports | 0 | 0 | — | 3,155 |
| 10 | Lewis Wherrell | KMR Sport | 0 | 0 | — | 3,121 |
| 11 | Arjen Kräling | Douglas Motorsport | 0 | 0 | — | 3,100 |
| 12 | Alex O'Grady | KMR Sport | 0 | 1 | — | 3,054 |
| 13 | Callum Baxter | Graham Brunton Racing | 0 | 0 | — | 3,022 |
| 14 | Dayton Coulthard | Douglas Motorsport | 0 | 2 | — | 2,969 |
| 15 | Stefan Bostandjiev | Pace Performance | 0 | 1 | Silver | 2,850 |
| 16 | Conor Grant | Douglas Motorsport | 0 | 0 | — | 2,800 |
| 17 | Enzo Hallman | Douglas Motorsport | 0 | 1 | — | 2,771 |
| 18 | Solenn Amrouche | Arden Motorsport | 0 | 1 | Silver | 2,738 |
| 19 | Megan Bruce | KMR Sport | 0 | 0 | Silver | 2,691 |
| 20 | Jason Smyth | Douglas Motorsport | 0 | 0 | — | 2,640 |
| 21 | Connor Willis | Hillspeed | 0 | 3 | — | 2,604 |
| 22 | Jason Pribyl | ADM | 0 | 6 | Silver | 2,598 |
| 23 | Fred Green | Elite Motorsport | 0 | 2 | — | 2,592 |
| 24 | Luca Magnussen | Fortec Motorsports | 0 | 0 | — | 2,579 |
| 25 | Luke Hilton | Douglas Motorsport | 0 | 0 | — | 2,574 |
| 26 | Mayer Deonarine | Graham Brunton Racing | 0 | 3 | — | 2,552 |
| 27 | Romuald Bocquet | Scorpio Motorsport | 0 | 0 | — | 2,519 |
| 28 | Archie Davies | Scorpio Motorsport | 0 | 0 | — | 2,443 |
| 29 | Joshua Mclean | Pace Performance | 0 | 0 | — | 2,437 |
| 30 | Alex Berg | Graham Brunton Racing | 2 | 11 | — | 2,428 |
| 31 | Charlie Myers | Arden Motorsport | 0 | 0 | — | 2,415 |
| 32 | Torrin Byrne | Pace Performance | 0 | 0 | — | 2,407 |
| 33 | Franciszek Cegielski | Fortec Motorsports | 0 | 0 | — | 2,377 |
| 34 | Michael Koh | Arden Motorsport | 0 | 0 | — | 2,370 |
| 35 | Jordyn Martin | Fortec Motorsports | 0 | 0 | — | 2,370 |
| 36 | Emmilio Del Grosso | Elite Motorsport | 0 | 0 | — | 2,341 |
| 37 | Jasser Iskander | Fox Motorsport | 0 | 0 | — | 2,324 |
| 38 | Matan Achituv | Elite Motorsport | 0 | 0 | — | 2,315 |
| 39 | John O'Donnell | Pace Performance | 0 | 0 | — | 2,226 |
| 40 | Ava Dobson | Arden Motorsport | 0 | 0 | — | 2,217 |
| 41 | Jamie Leverton | Idola Motorsport | 0 | 0 | — | 2,198 |
| 42 | Archie Bullard | Fox Motorsport | 0 | 0 | — | 2,192 |
| 43 | Demitri Nolan | Hillspeed | 0 | 0 | — | 2,137 |
| 44 | Enzo Rujugiro | Fox Motorsport | 0 | 0 | — | 2,134 |
| 45 | Dudley Ruddock | Arden Motorsport | 0 | 0 | — | 2,083 |
| 46 | Neirin Evans | Rossoverde Scorpio Racing | 0 | 0 | — | 2,041 |
| 47 | Flame Airikkala | Hillspeed | 0 | 0 | Silver | 1,926 |
| 48 | Holly Miall | Fox Motorsport | 0 | 0 | — | 1,680 |
| 49 | Lily-May Watkins | KMR Sport | 0 | 0 | — | 1,635 |
| 50 | Caitlyn McDaniel | Fox Motorsport | 0 | 0 | — | 1,574 |
GB4 is a single-seater sprint championship for drivers graduating from karting and club racing, run in the United Kingdom by MotorSport Vision with BRDC support since 2022. The field is entry-level professional, stronger than the SCCA Majors it draws drivers from but noticeably weaker than the feeder series above it; its median driver sits between the professional and semi-professional threshold. Leon Wilson leads the current grid. GB4 functions as a stepping stone upward, with drivers regularly progressing to GB3, British F4, and F1 Academy, while also receiving arrivals from established junior championships including US F4 and British F4 itself, as well as from peer karting series. The series sits in the lower rungs of the single-seater ladder, bridging drivers from grassroots racing toward the higher professional tiers.