[1] Kinsley began his British career riding for the Kings Lynn junior team in 2015.
[2][3] In 2019, he re-signed for Mildenhall Fen Tigers as a replacement for broken leg victim Danny Ayres.
[4] In 2021, Kinsley rode in the top tier of British Speedway, riding for the King's Lynn Stars in the SGB Premiership 2021.
The same season his career suffered a setback after his vand and bikes were stolen but luckily was able to retrieve them.
[5][6] In 2022, he rode for the Scunthorpe Scorpions in the SGB Championship 2022 and Mildenhall Fen Tigers during the 2022 National Development League speedway season.