| 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 more than 25 years in Germany, France and the Netherlands and holds a fourth degree black belt (yondan) by the Aikido world headquarters Aikikai Hombu Dojo in Japan. He has been teaching Aikido for many years and is an officially recognised martial arts teacher with Aikido Bond Nederland.
Mark Disco started practising Aikido at Aikido Delft more than 10 year ago and holds a third degree black belt (sandan) by the Aikido world headquarters Aikikai Hombu Dojo in Japan. He has been teaching Aikido for some time and is an officially recognised assistant martial arts teacher with Aikido Bond Nederland.
Ivo Severins started practising Aikido at Aikido Delft more than 5 year ago and holds a first degree white belt (ichi kyu) by the national Aikido association Dutch Aikikai Foundation. He has been teaching Aikido for some time.