Photo: Jakob Ebrey Photography
The number of debutants for this weekend’s GB3 round at Silverstone has risen to five, as August Raber steps up from Formula 4 with the Argenti with Prema team.
The Swede has taken three wins and is currently fifth in the standings in his sophomore British F4 campaign, having come 21st during an injury-blighted season with Xcel Motorsport in 2024. He also scored a victory earlier this year in F4 Middle East, where he was eighth in the points.
Argenti is competing in its first year of GB3 in partnership with single-seater powerhouse Prema, and has fielded a three-car line-up of Yuanpu Cui, Lucas Fluxa and Reza Seewooruthun at the first four rounds. A maiden victory was delivered last time out at the Hungaroring by Seewooruthun
Raber will take over Cui’s seat at Silverstone, as the Mercedes-AMG Formula 1 junior has announced a mid-season switch to Hillspeed.
Cui has raced with Argenti since 2024, when he came ninth in British F4 with one win. He is currently 16th in GB3, with a pair of sixth places at Zandvoort his best results.
“I’m excited to begin a new chapter with Hillspeed,” he said. “It was a pleasure to work with Argenti for the last two years, we mutually parted ways, and now I’m excited to see how this weekend at Silverstone goes in the new environment.”
The 17-year-old will race at Silverstone alongside Michael Shin, who is making a cameo return with Hillspeed. The Derbyshire squad has won four races this season despite having only contested two rounds so far. Freddie Slater, Kanato Le and Hiyu Yamakoshi – its drivers at those events – all have clashing commitments in FRegional Europe this weekend.
“It’s fantastic news we have agreed a deal with Yuanpu and his management to race with us in GB3 at Silverstone this weekend,” said Hillspeed’s team principal Richard Ollerenshaw.
“He obviously has half a season under his belt in this championship so the aim will be to gel together as quickly as possible and make strong progress across the weekend. With two days of testing ahead of qualifying and the races, we’re sure we can build toward some good results.”