Whicker's Orient - Alan Whicker (1972) - Man Kam To, Sheung Shui

The next installemnt of Whicker's Orient is called "The Freedom Swimmers" and focusses on those from the Mainland who make the often dangerous crossing from China into Hong Kong. The episode starts at the border at Man Kam To where Whicker interviews Superintendent Stanley Flowers and explains to the viewers the reality of the border between Hong Kong and China. 

You can compare the views below with those shot for Spearhead from the same watchtower around a decade later.