Master Yeo began his martial arts career by training Judo. 1966 he began to train TaeKwon-Do, in 1973 he joined the Singapore Army and was among the first TaeKwon-Do instructors to be appointed by the Singapore Armed Forces. Master Yeo was also activly involved in the promotion of TaeKwon-Do being also an instructor at the YMCA. He trained chinese Kung fu between the years of 1973 and 75.

He took part in a number of TaeKwon-Do tournaments both at national and international level.

He arrived in Sweden 1977 as an instructor in TaeKwon-Do. In 1979, at the skandinavian Champion-ships was he appointed Vice Technical Director to the All Europe TaeKwon-Do Federation. Since 1986 he was appointed chief instructor fo Sweden and in 1987 president of ITF in Sweden.