Murray Simpson first started karate training in 1984 at the Dunedin Dojo under the instruction of Sensei Bob Cahill.
In June 1986 Murray was graded Sho Dan by Sensei Morio Higoanna.
During 1987 and 1988 Murray taught at the University of Otago Karate Club where more than 120 students regularly trained two nights a week. During this time Murray continued to train at the Dunedin Hondo Dojo 4 nights a week.
In 1989 Murray moved to Auckland and continued his training at the Glenfield Honbu Dojo under Sensei Dennis May.
Murray took a break from regular karate training from early mid 1990's for work and family reasons.
During mid 1990's Murray took up triathlons which culminated in him qualifying and competing as an amateur in the 1993 Ironman World Championships at Kona Hawaii, finishing in 214 place.
In 2001 Murray resumed his karate training at the Westmere Dojo under Sensei Gerard Jackson and at Honbu Dojo under Sensei Dennis May. In October 2003 Murray was graded to San Dan by Sensei Dennis May.
Sensei Murray started the Remuera Dojo in October 2004.
In August 2006 Murray was graded Yon Dan (4th Dan) by Shihan Dennis May. He was recently graded to 5th Dan under Hanshi Kiichi Nakamoto.