Martial Arts, Karate, Kickboxing, Taekwondo, Kungfu and Self Defense in Doncaster, Retford, South Yorkshire and Nottinghamshire Martial Arts karate Classes for Adults, Children and Families "Lynx Black Belt Leadership Academy is dedicated to the highest quality of martial arts training in Doncaster and Retford. We are committed to continually enhancing our program to address exercise, drills, safety tips and a realistic approach to adult and kids self-defense "