SHIHAN-DAI Jacob Greasley
Sensei Jacob has been practising martial arts for more than 25 years. He trained extensively in Japan for several years in jujutsu and swordsmanship and was awarded the rank of 5th Dan, Shihan-dai in jujutsu in Japan. Sensei Jacob also holds a 4th Degree Black Belt in Shito Ryu karate and was issued the 'Kyoshi' teaching license by Seiken Shudo Kai under Japanese master Sei Iwasa Shihan. He has also taught and performed demonstrations in Japan, the UK and the Caribbean. He turned to martial arts training as a teenager and after several years of military service he founded Jikan Dojo in East London where he teaches many children and adults.
Though and engineer by profession, with a masters degree in electrical engineering he is also an experienced security officer and bouncer. He holds a DBS (formerly CRB) background check, along with qualifications in karate & sports coaching, Safeguarding & Protecting Children and First Aid.
Sensei Jacob regularly travels to Europe, the Caribbean, Japan & Okinawa to teach, demonstrate and practice Japanese martial arts. With guidance from his own teachers and mentors he works to promote martial arts not only as a means of self-defence but also for personal growth and moral development. Read his article Karate Beyond Technique.
INSTRUCTOR - Karate
SENSEI David Christenson
Sensei David holds a 2nd Degree Black Belt in Shito Ryu karate and has been training for over 20 yrs. He is originally from Fresno, California USA and settled in the UK a couple years ago. He has training in karate coaching and has the suitable background checks and qualifications.
He is also a practitioner of koryu iaijutsu and kenjutsu, old Japanese sword arts taught at Jikan Dojo.
ASSISTANT INSTRUCTOR - Jujutsu & Kobudo
SEMPAI Alistair Briggs
Sempai Al has been been a dedicated and passionate student of Jikan Dojo since he first started. He is a member of our jujutsu and kobudo groups holding dan ranks in both arts. He is also a practitioner of koryu iaijutsu and kenjutsu, old Japanese sword arts taught at Jikan Dojo.
ASSISTANT INSTRUCTOR - Karate, Jujutsu & Kobudo
SEMPAI Kacper Pietrzyk
Sempai Kacper our longest serving member, training with Jikan Dojo for almost 10 years. He is one of the most senior members of our karate, jujutsu and kobudo groups, holding dan ranks in all the arts. He has competed and demonstrated in martial arts events around the UK and Europe. He is first aid trained and is currently pursuing further instructor qualifications.
JIKAN DOJO INSTRUCTORS