Fleming, a granddad of four, has always been interested in martial arts and he is planning on trying kickboxing next.
"It's an indescribable feeling, it's my passion," the Mirror quoted him as saying.
The OAP of Basildon, Essex revealed his lifelong interest in self-defence started when he serving in Libya in 1941.
"We had nothing to do but wrestle each other," he said.
"I've been accosted in town. People see a little man with grey hair and put their hands on me, but I knew what to do, enough to see them off," he added.