Bart Harrison joins JHR Developments for remainder of GB3 championship campaign

JHR Developments is pleased to confirm that Bart Harrison will join the team as it expands to three cars for the remaining two meetings of the GB3 Championship season.

The 18-year-old has been competing in the E4 and Italian F4 Championships this year, with a standout third-place finish at Monza among a series of top ten results across both campaigns. He also raced in the Formula Winter Series – with two podiums – and claimed two wins and a podium in a one-off appearance in the Formula 4 CEZ Championship

Bart made his single-seater debut in British F4 last year, immediately making an impression with a Rookie Cup victory in the second race of the season and going on to secure a further eight podium finishes across the campaign.

Prior to that, he twice finished runner-up in the British Karting Championship – in IAME X30 Junior and Senior – and became the only two-time winner of the IAME Winter Cup in Valencia, in X30 Junior. He also proudly represented Great Britain in the FIA Karting Academy Trophy.

The Yorkshire-based racer will join team-mates Noah Lisle and Kai Daryanani in the GB3 Championship at Donington Park on 4–5 October and at Autodromo Monza on 18–19 October for the 2025 season finale.

“I’m extremely excited to be joining JHR Developments for the final two rounds of the GB3 Championship. This will be my first experience in a car of this speed and performance, and I’m eager to learn as much as possible from the team and my team-mates. I know the team has a great track record of helping young drivers progress and I’m confident that, with their support, I can make a positive impression at Donington Park and Monza.”

Bart Harrison

“We’re very pleased to welcome Bart to the team for the final two rounds of the GB3 Championship season. He has shown that he has a huge amount of talent and potential and, while GB3 is a big step up, we have no doubt he will adapt. We’re looking forward to working with him and helping him to maximise this opportunity.”

Steven Hunter, Team Manager