Classical Wing Chun Kung Fu is the style of Wing Chun

Wing Chun

Wing Chun , also romanised as Ving Tsun or Wing Tsun, ; ; is a concept-based Chinese martial art and form of self-defense utilizing both striking and grappling while specializing in close-range combat.The alternative characters 永春 "eternal spring" are also...

 Kung Fu taught by Sifu Ian Protheroe

Ian Protheroe

Ian Protheroe is a well-known Australian Wing Chun Kung Fu practitioner, teacher, and author. Protheroe learnt the Traditional Wing Chun Kung Fu system from Grandmaster William Cheung in the 1980s in Melbourne, Australia...

 and his students. Protheroe was a direct student of Grandmaster William Cheung

William Cheung

William Cheung or Cheung Cheuk Hing , born ? October, 1940, is a Chinese Wing Chun kung fu practitioner and currently the Grandmaster of his lineage of Wing Chun, entitled Traditional Wing Chun...

 in the 1980s in Melbourne, Australia, before moving north to Queensland where he opened his own school and began the development of his Classical Wing Chun Kung Fu System .
The Protheroe's Classical system is based on Cheung's Traditional Wing Chun Kung Fu

Traditional Wing Chun Kung Fu

Traditional Wing Chun Kung Fu is a style of the Chinese martial art Wing Chun. It is claimed to be the authentic, more effective version of Wing Chun taught exclusively to William Cheung by Yip Man...

 system .