When returning to the UK, in 1981 he was appointed chairman and senior overseas representative of the Ip Chun Martial Art Association by Grandmaster Ip Chun.

Having settled in the UK, Master Kwok started to teach Wing Chun privately but later he opened his first school after great demand from several martial arts enthusiasts. In his bid to promote Traditional Wing Chun and his Si-Fu, in 1981 Master Kwok held the first of many seminars in the UK for Grandmaster Ip Chun.

In 1991 Master Kwok invited both Grandmasters Ip Chun and Ip Ching to the UK, to held their first joint seminars across the country. This was the first visit to the UK by Grandmaster Ip Ching.

In 1994 Master Kwok returned to Hong Kong to study with Grandmaster Ip Ching. Also In 1994 Master Kwok introduced Steve Lee Swift from New York, to Grandmaster Ip Chun and helped to organize some very successful seminars in America, taught by Grandmaster Ip Chun.

In 1995 once again Grandmaster Ip Ching was invited by Master Kwok to the UK, to conducted several seminars across the country but this time he was accompanied by Grandmaster Chu Shon Tin, one of the first students in Hong Kong of the late Grandmaster Ip Man.

Also in 1995 the two famous brothers Grandmaster Ip Chun and Ip Ching visited Chicago to teach together for the first time in America. Again, this visit was arranged and assisted by Master Samuel Kwok.