Tom Grimshaw, hailing from Hertfordshire, England, began his professional motocross career in 2018. He quickly established himself as a formidable competitor, securing a third-place finish in the 2022 Revo ACU British Motocross Championship MX2 class. In 2021, Grimshaw expanded his horizons by competing in the EMX250 European Championship, gaining invaluable experience on international tracks.

In 2024, Grimshaw transitioned to the MX1 class, joining the Apico Honda Racing team alongside veteran rider Martin Barr. This move signifies his progression to the premier class, where he continues to demonstrate his dedication and skill. Looking ahead, Grimshaw is set to compete in the 2025 Arenacross World Tour and has confirmed his participation in the Hawkstone International MX, indicating his readiness to take on new challenges and further his career in the sport.