William Fairbairn served in the Shanghai Municipal police at a time when it was the most dangerous city in the world. He had to contest against armed gangsters with knives, pistols, multiple numbers, and brutal martial arts of their own. The Defendu method is a combination of Japanese Jujitsu and Chinese martial arts combined with street fighting methods like improvised weapons and deception.
These techniques are meant to be used at any time with minimal training. Of course you can continue to practice and further refine your technique along with combining this method with other systems or simply use it as a stand alone method. These techniques are only meant for serious self defense. Avoid trouble and stay safe. I also recommend an exercise program like tai chi or yoga to keep the body limber and toned. Being relaxed and supple is the most important for these techniques.
