Career
In November, 2012 he was signed by Luxembourg-based UCI Continental cycling team Differdange–Losch for the 2013 European summer but was forced to return home early after injuring his shoulder. Simpson competed with the Australian-based Team Budget Forklifts squad on the road in 2014. He will keep his place in the team for the 2015 season.
Simpson was also recently recalled the New Zealand track cycling team, claiming a silver medal at the UCI London World Cup in December, 2014.