The GB4 Championship is a single seater motorsport series based in the United Kingdom.

[3] The first round of the inaugural season took place at Snetterton Circuit on 2 April 2022, with the first winner being Nikolas Taylor driving for Fortec Motorsports.

It features a sequential six-speed gearbox developed by Sadev and Magneti Marelli electronics.

The organiser states that privateer teams can run in the championship for approximately £60,000, and fully professional teams for around £150,000[8] A prize to the value of £50,000 was offered to the 2024 champion if the champion subsequently chooses to compete in either the British F4 championship, or GB3, in 2025.

Alisha Palmowski finished second in the 2024 championship, and received a £30,000 prize to be used to help fund entry into the F1 Academy series in 2025.