The 2021 GB3 season started out as British Formula 3, but the famous name disappeared mid-season. What was shaping up to be a tight title battle also started to change narrative at the same time, and it was Carlin's Zak O'Sullivan who triumphed in unusual circumstances. Formula Scout's GB3 correspondent Steve Whitfield joins Craig Woollard to discuss the season at length and what the future holds for it and for its new feeder series GB4. Stick around at the end for Steve's chat with the champion after he was crowned at Donington Park