Our Coaches and Staff

Photo of Simon Mazzullo

Simon Mazzullo

7th Dan – HEAD COACH.

Leading the coaching team is Simon Mazzullo who has a wealth of experience. Sporting over 50 years experience practicing Judo, over 45 of those have been spent coaching Judoka. As well as running Barnet Judo Club, Simon holds key positions with the British Judo Council and the BJC British Judo Foundation. During his illustrious Judo career, Simon has won many medals including holding the UK National Champion title. He is invaluable to the coaches development, his knowledge is above and beyond. he is constantly involved in all aspects of this sport not just at club level.

Photo of Lukasz Klimek

Lukasz Klimek

4th Dan – head coach for senior group


A highly decorated Judoka, Lukasz has over 20 years experience practicing and competing in Judo. He runs a high level class for seniors. though he has been known to have playful antics on the mat too. Helping coach Judoka at Barnet for the last 10 years, he brings a wealth of competition knowledge and techniques. Crowned UK National Champion twice, Lukasz has also represented Poland in the Veterans European Championships.

John Burke

1st Dan – Head Coach for our juniors -10 to 16 yrs old

John has over 40 years experience practising and competing in judo, 10 of which have been as a judo coach. He has obtained level FPJ 1 & FPJ 2, and is first aid qualified. John trains our junior class for competition’s and also prepares the older ones to make that move to our senior class. This is a hardworking class, but always with elements of fun. john is very passionate about the traditional Japanese way of teaching Judo. he learnt all of his judo from Simon.

Marios Potamitis

1st Dan – Assistant Coach

JUNIORS. 10-16

Marios is another of our coaches with over 20 years experience of Judo, including being level 2 FPJ qualified. He’s been involved with Barnet Judo Club for many years and is passionate to see it succeed. He too was a student of Simon whilst Marios is not a regular coach on the mat, he keeps up with all his courses and is there when we need him to step in.

Chris Grilli

1st Kyu – Head Coach


As a Junior, Chris was a successful Judoka having earned gold in London area competitions. He now is the club organiser taking our club team to these games. With over 30 years experience of Judo, Chris delivers a fun but productive class. He also attends many of the competitions with the children and is the first port of call mat-side.