Koo Self Defence has been developed by Master JP Kwoo and Master Roger Koo who have over 80 years martial arts experience between them. They revolutionized and changed the style of martial arts training to develop their own techniques and individual style providing students with 'realistic knockout hitting power' within a matter of weeks or months.

Bearsted Koo Self Defence International School was formed by Gary Duckworth who has trained under Master JP Kwoo since January 1988. Over the years Gary progressed from Tae Kwon-Do, to Choi Kwang Do and to Koo Self Defence with both Master JP Kwoo and Master Roger Koo.

Gary achieved his Black Belt in April 1990, 1st Degree in December 1990, and 2nd Degree in September 1996. He became a chief instructor in July 1991 and started the Bearsted Koo Self Defence International School in south-east England.

Over the years Gary has seen many developments from traditional martial arts. These developments include power enhancement, practical moves, realistic scenarios, aerobic and anaerobic workouts. For more detailed explanations, visit Master Roger Koo's award-winning KSD international site.