For more than 25 years the British GT Championship has formed an intrinsic part of the UK’s national motorsport fabric. Having undergone a number of changes throughout that quarter-century, it’s difficult to envisage an era more competitive than the current GT3/4 format. And from 2025 a new series within a series, the Endurance Cup, will join British GT’s list of class championships. Reserved for GT4 cars, the four-round calendar includes existing two and three-hour races at Donington Park, Silverstone and Spa-Francorchamps.