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U7A/44 Hutton Street, Osborne Park WA 6017
Contact: 0431 011 828

Instructor Profiles

The journey to obtaining a black belt in Tsutsumi Hozan Ryu Jujutsu takes many years of dedication to the art. Emphasis is placed on perfection of technique and attitude rather than the colour of the belt.


Sensei Dan Newcombe
6th Dan Tsutsumi Hozan Ryu Jujutsu, 2nd Dan Shotokan Karate, THRI Principal

Sensei Dan’s family involvement with Tsutsumi Jujutsu spans 3 generations and started in 1986 where he was introduced to jujutsu at a young age. Sensei Dan has been teaching Tsutsumi Jujutsu since 1996, is graded to 6th dan black belt in Tsutsumi Jujutsu and 2nd Dan in Shotokan Karate,  holds Cert III in Fitness Instruction and is a Senior First Aider. Dan is the Principal Instructor and owner of Self Defence Central Dojo and the THRI (Tsutsumi Hozan Ryu International) Principal,  a grading system framework to coordinate with affiliated clubs and assist the introduction and promotion of Tsutsumi Hozan Ryu Jujutsu.


Sensei Andre Diaz 
2nd Dan Tsutsumi Hozan Ryu International Jujutsu, 3rd Kyu Shotokan Karate

Andre has been training with the De Jong family since 1985. Following a work related assignments in Guam, Melbourne and Adelaide for several years Andre has returned to Perth to continue his training under Master Hans De Jong and is graded 2nd Dan THRI black belt.  Sensei Andre regularly teaches at Self Defence Central Dojo and provides ongoing guidance to students and assistant Instructors.


Sensei Wim Mallens (Rotterdam)
 5th Dan Shotokan Karate, 1st Dan Tsutsumi Hozan Ryu International (THRI) Jujutsu

Sensei Wim Mallens is Self Defence Central Dojo’s Shotokan Karate Principal and the Tadashii-do Principal. Tadashii-do is a school closely affiliated with Self Defence Central Dojo. A 5th dan black belt in Shotokan Karate, Sensei Wim started his Shotokan Karate Club in Rotterdam, Holland in 1981 that later went on to become the well known and widely respected Tadashii-do Shotokan Karate Club. He is a long term friend of Master Hans de Jong and regularly invites Hans over to the Netherlands to run seminars at his dojo. More information on Sensei Wim’s school can be found on his website: http://www.tadashii-do.nl


Sensei Angus Ashby
3rd Dan Taekwondo, 1st Kyu Tsutsumi Hozan Ryu Jujutsu, 1st Kyu Aikido, Blue Belt BJJ

Sensei Angus has been training with Jan De Jong since 1987. He was lucky to accompanied Mr. De Jong to teach Jujutsu in Europe.  Sensei Angus is the chief instructor of Body Mechanics Self Defence School. His school is affiliated with Self Defence Central Dojo. Sensei Angus is a long-term friend of Sensei John Coles who has been a constant mentor of Angus’s development in Jujutsu. Sensei Angus regularly trains and teaches at Self Defence Central Dojo.

More information on Sensei Angus’s school can be found on his website: http://bodymechanicsselfdefenceschool.com.au/