Chief Instructor & School Owner — 8th Degree Black Belt
Han Guk Mu Sool has secured Master John Gravenall as Chief Instructor of the Association. The role of Chief Instructor is to take the lead in the oversight of martial arts training across the association — leading our martial arts training, syllabus, workshops, seminars, and overall physical learning.
Master John is uniquely suited to this position given his huge experience in the realm of armed forces, police special units, and extensive martial arts training.
Upon leaving school he joined the Armed Forces and gained valuable life skills as an Army paramedic within the RAMC, where he served within the Parachute Regiment. He was subsequently seconded to a Bomb Disposal Unit with the Royal Engineers in Iraq.
Upon leaving the Armed Forces, John went into a career within the Police service where he progressed and became a Sergeant and a physical training instructor on a Firearms Operational Unit. His main role was as an Operational Firearms Commander (OFC), leading a team of firearm operatives and dealing with spontaneous and pre-planned firearms operations.
His martial arts training and teaching has taken him all over the world where he has competed at a high level and won numerous British and International titles. He has also trained with some of the best martial arts Masters in the business.
As Designated Safeguarding Lead, Master John takes the protection of students — particularly children — extremely seriously, bringing 40+ years combined police and safeguarding experience to the role.
