We’re connecting with some high level instructors to offer you some of the best mat time with great BJJ.

We’re not just looking for high level instructors, we’re looking for good people that are aligned with our philosophy to embody the respect and compassion of community support that these festivals represent and all our instructors are onboard to help support this ethos.

This is our first wave of instructors from our own BJJ community at home and abroard – we’ll be updating with more great people throughout the year!

Kai Maybury

Kai is a dedicated practitioner of Brazilian Jiu Jitsu who has humbly earned the rank of black belt. With over 15 years of experience in the art, he has also explored other disciplines such as Muay Thai, Boxing, Wrestling, and Taekwondo, making him well-rounded in the martial arts world. He has gained valuable experience through his competition in both gi and no-gi grappling. Kai is the founder and head instructor at 24 Jiujitsu Caerphilly. 

Kai’s approach to Brazilian Jiu Jitsu goes beyond just the physical aspects of the sport. He believes in it as a way of life, promoting self-discipline, humility, and respect. He is dedicated to helping his students develop not only their martial arts skills, but also their personal growth.

Karl Franks

Karl started his martial arts journey at the age of 10 years old training in Boxing then moving to kickboxing, training under European champion James Russell and WKO World champion Denzil “Deadly Lawrence” Karl competed in point scoring karate at a high level moving on to full contact where he competed at a international level representing Wales.

He started JIU-JITSU in 2009 in Cardiff under multiple world and ADCC champion Braulio Estima’s black belt Chris Rees (Wales very first black belt)Karl then moved to train under UFC veteran and SBG black belt Jason Tan and of MMA academy Liverpool. Achieved the rank of black belt in 2022.

Karl also trains freestyle wrestling with links to Wolverhampton wrestling club.
Karl runs his own successful gym – OSWESTRY JIU-JITSU ACADEMY with over 150 students.

Fabio Bertoli

3rd Degree Black Belt under Rocian Gracie Jr. Born in São Paulo, Brazil and started his BJJ journey in 1997 before training under the legendary Rocian Gracie from 2008.

Rocian awarded Fabio the esteemed black belt in 2015 and following further education he moved to the UK in 2019.

Betoneira BJJ started in Ross On Wye in 2021 before expanding to Hereford in 2022. The club prides itself on its Brazilian heritage and is based on family values.

Dave coles

4th degree BJJ black belt awarded by Braulio Estima
Head coach at The Combat Academy

Multiple time Brazilian Jiu Jitsu CBJJ International Masters & Seniors champion.

5th Dan Black Belt (British Judo Association) and a background in MMA

Jake O’shea

British medium heavy champion 2025 Gi brown belt
Multiple time IBJJF medalist

Black belt under Bryn Jenkins

Experience coaching adults and youth.