SRO Motorsports Group and the Intelligent Money British GT Championship extend their deepest sympathies and condolences to the family and friends of Jon Crook who passed away on Monday.
The BRSCC's chief scrutineer was also British GT's long-standing eligibility scrutineer - a role he had performed since 2006.
His work, which was always carried out to the highest and exacting standards, saw Jon operating in all corners of UK motorsport. His journey began as a scrutineers’ marshal at Silverstone in the mid 1980s before progressing to a fully licensed scrutineer - one of just 12 such individuals appointed technical commissioners by Motorsport UK.
Jon also oversaw eligibility for the likes of the TVR Tuscan Challenge, SEAT Cupras and Formula Ford, and worked further afield for the FIA whom he assisted with various GT and drifting events around the world.
But it's within the British GT paddock that Jon's legacy will perhaps live longest. He and his wife Sue - another dedicated BRSCC club member and official - are two of the championship's most recognisable volunteers thanks to their years of service during race weekends and beyond.
The thoughts and prayers of SRO Motorsports Group are with Sue, the Crook family and Jon's friends at this difficult time.