Over the next 11 years, Rennie refereed more than 300 top-flight matches, including domestic cup finals and European fixtures. His impressive career was marked by his dedication to the game and his commitment to promoting diversity within football.

The English Football Association has expressed its sadness at Rennie's passing, praising him as a true trailblazer in the game. The association has also offered its condolences to Rennie's family and friends during this difficult time.

After retiring from refereeing in 2008, Rennie continued to contribute to the sport by serving as a mentor and promoting diversity within football. His legacy as a pioneering referee will be remembered for years to come.