Henry Ellis Co-author of Positive Aikido. A direct student of Kenshiro Abbe Sensei from 1957. Ellis is a well known pioneer of British Aikido and an early student of the famous Hut Dojo Henry Ellis 5th dan Aikido and a direct student of the legendary Budo Master Kenshiro Abbe Sensei from 1957.Henry is the co-author of the book Positive Aikido, he has written many articles for International Martial Arts magazines. He is the Principal coach of the Ellis Schools of Traditional Aikido.