The Jitsu Foundation is the largest single-style Jiu Jitsu organisation in Britain. Jitsu is a martial art based on the traditional styles of Jiu Jitsu that originated and developed in medieval Japan. The core of the art comprises a system of throws, joint locks and strikes. Based on the principal of using an aggressor’s energy to their own disadvantage, Jitsu skills can be used by men, women and children to counter aggressive situations ranging from unwanted harassment to armed physical assault. The Jitsu Foundation is an organisation with over a hundred clubs in the UK that teaches the modern and unique Shorinji Kan system of Jiu Jitsu. With over 3,000 active members and several hundred instructors - including specialists in modern sport forms, traditional forms, weapons training, First Aid and Shiatsu.