The GB3 Championship is run by MSVR and comprises 24 races across eight events. Carlin have been multiple Driver's and Team's Champions since its revival in 2016.

The weekend format includes a 20-minute qualifying session and three 20 minute races – testing is not limited like so many championship, and is also a common feature in the days leading up to the race weekend.

The GB3 car will experience a raft of changes for the 2022 season, all focused on performance and safety upgrades. A completely new chassis, provided by existing partner Tatuus will incorporate a halo, improved side-impact protection, revisions to the roll hoop, headrest, front anti-intrusion panel, seat and fuel cell areas. To complement more downforce, the new GB3 car will also feature a new two litre, four cylinder normally aspirated Mountune engine, to enable the unit to produce over 250bhp at 8500 rpm, a 20 bhp increase on the current car. To facilitate the increase in power, the car will feature a traditional side air-intake and carbon airbox as seen on traditional F3 cars.

Carlin has a winning history in the championship. Ricky Collard finished second in the team's inaugural season in the championship in 2016. Enaam Ahmed dominated the 2017 season to storm his way to the championship title with team mate James Pull taking second. Nicolai Kjaergaard was runner-up for Carlin in 2018, with fellow team mate Billy Monger also taking podiums on his return to racing.

Further success followed in 2019 with the championship honours going to Carlin's Clement Novalak, with Kaylen Frederick following in his former team mate's footsteps with his own championship title in 2020. Zak O'Sullivan made it three Drivers' titles in a row for Carlin in 2021 as he claimed championship honours in his debut season in the series.

Callum Voisin, Javier Sagrera and Roberto Faria make up Carlin's 2022 GB3 Championship line-up.