Roberto Faria set the fastest time in both testing sessions on Thursday afternoon as the BRDC British Formula 3 Championship heads to Silverstone.
Dexter Patterson (Douglas Motorsport) followed the Fortec Motorsport driver in both sessions, with Zak O’Sullivan (Carlin) taking third and fourth in Sessions 3 and 4 respectively.
Arden Motorsport‘s pairing of Alex Connor and Frederick Lubin were next, ahead of Ayrton Simmons (Chris Dittmann Racing) and Tom Lebbon (Elite Motorsport).
Reece Ushijima and Bart Horsten took eighth and ninth for Hitech GP, with Bryce Aron (Carlin) tenth.
The Mexican pair of Sebastian Alvarez (Hitech) and José Garfias (Elite) led Christian Mansell (Carlin), Max Marzorati (CDR), Reema Juffali (Douglas), Javier Sagrera (Elite) and Mikkel Grundtvig (Fortec).
2021 Silverstone GP Third Test Session Results:
| Pos. | No. | Name | Nat. | Team | Time/Gap |
| 1 | 7 | Roberto Faria | BRA | Fortec Motorsport | 1:55.683 |
| 2 | 55 | Dexter Patterson | GBR | Douglas Motorsport | +0.246 |
| 3 | 51 | Zak O’Sullivan | GBR | Carlin | +0.294 |
| 4 | 27 | Alex Connor | GBR | Arden Motorsport | +0.463 |
| 5 | 78 | Frederick Lubin | GBR | Arden Motorsport | +0.506 |
| 6 | 18 | Ayrton Simmons | GBR | Chris Dittmann Racing | +0.516 |
| 7 | 34 | Tom Lebbon | GBR | Elite Motorsport | +0.725 |
| 8 | 13 | Reece Ushijima | JPN | Hitech GP | +0.764 |
| 9 | 50 | Bart Horsten | AUS | Hitech GP | +0.859 |
| 10 | 23 | Bryce Aron | USA | Carlin | +1.053 |
| 11 | 12 | Sebastian Alvarez | MEX | Hitech GP | +1.227 |
| 12 | 99 | Jose Garfias | MEX | Elite Motorsport | +1.298 |
| 13 | 21 | Christian Mansell | AUS | Carlin | +1.378 |
| 14 | 81 | Max Marzorati | GBR | Chris Dittmann Racing | +1.392 |
| 15 | 10 | Reema Juffali | SAU | Douglas Motorsport | +1.565 |
| 16 | 3 | Javier Sagrera | ESP | Elite Motorsport | +1.940 |
| 17 | 43 | Mikkel Grundtvig | DEN | Fortec Motorsport | +2.237 |
Faria topped the times again in the final session of Thursday, setting the fastest time of the day with Patterson in tow three hundredths behind.
The pair had a three-tenth buffer back to Horsten and O’Sullivan, themselves separated by four thousandths, while Tom Lebbon led Alex Connor by two thousandths in fifth.
The top ten were separated by just six tenths, with Alvarez, Sagrera, Lubin and Ushijima leading Mansell, Garfias and Bryce Aron.
Four drivers lapped outside a second of Faria’s 1:55.440; Brands Hatch race-winner Ayrton Simmons, Reema Juffali, Max Marzorati and Mikkel Grundtvig.
Testing continues on Friday afternoon, before Qualifying and the first race of the weekend on Saturday.
You can follow all the action on The Checkered Flag.
2021 Silverstone GP Fourth Test Session Results:
| Pos. | No. | Name | Nat. | Team | Time/Gap |
| 1 | 7 | Roberto Faria | BRA | Fortec Motorsport | 1:55.440 |
| 2 | 55 | Dexter Patterson | GBR | Douglas Motorsport | +0.037 |
| 3 | 50 | Bart Horsten | AUS | Hitech GP | +0.316 |
| 4 | 51 | Zak O’Sullivan | GBR | Carlin | +0.321 |
| 5 | 34 | Tom Lebbon | GBR | Elite Motorsport | +0.371 |
| 6 | 27 | Alex Connor | GBR | Arden Motorsport | +0.373 |
| 7 | 12 | Sebastian Alvarez | MEX | Hitech GP | +0.552 |
| 8 | 3 | Javier Sagrera | ESP | Elite Motorsport | +0.571 |
| 9 | 78 | Frederick Lubin | GBR | Arden Motorsport | +0.593 |
| 10 | 13 | Reece Ushijima | JPN | Hitech GP | +0.599 |
| 11 | 21 | Christian Mansell | AUS | Carlin | +0.685 |
| 12 | 99 | Jose Garfias | MEX | Elite Motorsport | +0.888 |
| 13 | 23 | Bryce Aron | USA | Carlin | +0.982 |
| 14 | 18 | Ayrton Simmons | GBR | Chris Dittmann Racing | +1.152 |
| 15 | 10 | Reema Juffali | SAU | Douglas Motorsport | +1.371 |
| 16 | 81 | Max Marzorati | GBR | Chris Dittmann Racing | +1.681 |
| 17 | 43 | Mikkel Grundtvig | DEN | Fortec Motorsport | +2.323 |