The Club & The Instructors

Shyam Raithatha with Sensei Koji Arimoto, WKF and JKS World Champion at the JKS World Headquaters in Tokyo

The Club

Harrow Shotokan Karate (HSK) was founded in 2011 by Shyam Raithatha.

Unlike many karate clubs and karate organisations in the UK, HSK has direct links to the home of karate, Japan. 

We belong to the Japan Karate Shoto Federation (JKS) with it's world headquaters in Tokyo, Japan via The Japan Karate Shoto Federation - England (JKS England). 

We teach karate as it is taught in Japan. We have regular trips to Japan to train and also have regular visits from Japanese instructors from the JKS World Headquarters.

Harrow Shotokan Karate is also affiliated to the English Karate Federation (EKF) and the the World Karate Federation (WKF) which is the only world karate body to be recognised by the International Olympic Committee (IOC)



The instructors of HSK have a wealth of experience and knowledge and have over 80 years of karate experience between them. They have trained and graded with some of the most senior karate masters in the world from Japan and Europe. 

Between them, they have won numerous titles at both domestic and international level.


Senior Instructor, Shyam Raithatha is the founder of HSK and a 5th Degree Black Belt. He began studying Karate in 1992 and was a member of the England National team winning many national and international medals. He travels to Japan regularly to train at the JKS World Headquaters in Tokyo and in December 2015 achieved his 5th Dan Black Belt after under going an examination in Tokyo under a panel of senior Japanese masters.

Instructor, Anas Jarboua is a 4th dan and long term friend and team mate with Sensei Shyam. A great competitior, he is team captain for Harrow Shotokan Karate and Kumite Coach for the competition squad. He has won everything to win in domestic competition winning many English and British titles as well as many medals at European and World level. He has been a member of the England national team for many years. A proud Syrian, he goes to Syria regularly to teach Karate to children. 

Instructor, Jenel Simescu is a 3rd Dan Black Belt and former England Team member and National Champion with more than two decades of experience at the top level. Technically very gifted, he started his karate career in Romania before moving to England and continuing his training in the UK. 

Sensei Jenel Simescu