At 12 years of age Dixon was competing in the Southern Supermoto Championship before advancing to the Aprilia Superteens Championship in 2010.
2010
In his first year competing on tarmac Dixon came 3rd in the Aprilia 125cc Superteens Championship. The winner that year was Chrissy Rouse, later competing against Dixon in the 2018 British Superbike Championship.
2011
Dixon advanced up to the Aprilia RRV450 Challenge Championship racing Aprilia's twin cylinder four-stroke machine. Once again he was 3rd in the Championship that year.
2012
At 16 years of age Dixon advanced to the British National Superstock 600 cc Championship one of the support classes in the British Superbike Championship. He acquitted himself well on the Shaun Rose prepared Moto Breakers Yamaha R6 finishing 4th in the Championship. If he had not crashed going over the mountain at Cadwell Park injuring his wrist he could have finished higher than 4th.
2013
Dixon contested the year with a new team and a new championship. He moved up to the Supersport 600 Championship riding for Craig Fitzpatrick's CF Motorsport team on a Yamaha R6. After six rounds he crashed heavily at Oulton Park and broke his scaphoid bone. This ended his season; he finished 16th in the championship.
2014
Staying in the Supersport 600 Championship Dixon rode for the Appleyard/Macadam/Doodson team again on a Yamaha R6. He finished the season in 8th position.
2015
Dixon joined the Smith's team riding a three-cylinder Triumph 675 and achieved 3rd place in the Supersport 600 Championship.
2016
Dixon teamed up with Dave Tyson's Tsingtao MV Agusta team for the season but things did not work out and he was offered an alternative ride half way through the year in the Premier Class British Superbikes with Lee Hardy's Briggs EquipmentBMW S1000RR. After five rounds his brakes failed at Oulton Park resulting in a broken hip which ended his season.
2017
He won both round-four races of the 2017 British Superbike Championship at Knockhill Racing Circuit. He finished 6th in the 2017 British Superbike Championship and was the youngest ever rider to make the final showdown which is made up from the top six riders. Dixon announced that he would stay with the Lee Hardy Racing/RAF Regular & Reserves Team in 2018, on a Kawasaki ZX10R 1000 cc machine in the 2018 British Superbike Championship.
2018
Dixon finished his participation in the British Superbike Championship series in second position to champion Leon Haslam.
Dixon also made his first appearance in the Superbike World Championship in 2017 at the race at Donington Park, where he retired in the first race and finished 9th in the second race.