| Aikido Centrum Leiden | Regional Aikido centre |
| Dutch Aikikai Foundation | National Aikido association |
| Aikido Bond Nederland | National Aikido federation |
| Cercle Tissier | European Aikido centre, France |
| Aikikai Hombu Dojo | Aikido world headquarters, Japan |
Dr. Martin Mühlenbrock has been practising Aikido for nearly 30 years internationally. He holds a fourth degree black belt (yondan) by the Aikido world headquarters Aikikai Hombu Dojo in Japan. He is a certified martial arts teacher with Aikido Bond Nederland.
Mark Disco started practising Aikido at Aikido Delft more than 15 years ago. He holds a third degree black belt (sandan) by the Aikido world headquarters Aikikai Hombu Dojo in Japan. He is a certified assistant martial arts teacher with Aikido Bond Nederland.
Ivo Severins started practising Aikido at Aikido Delft more than 5 years ago. He holds a first degree white belt (ichi kyu) by the national Aikido association Dutch Aikikai Foundation.