Trevor Fredericks started training with Kyokushin Karate in 1979. He met Shihan Reed Oliver in 1984 and together they started a dojo in Bonteheuvel. They joined Ashihara Karate with Brian Ebden in 1987 and a year later followed Kancho Joko Ninomiya when he formed his Enshin Karate organisation. Shihan Reed Oliver and Brian Ebden were the chief instructors of the style for South Africa at the time.
In 1996, Trevor opened a dojo at the University of the Western Cape where he still acts as the coach holding the rank of Godan.