4
5.
The basic sources of information about
emigration are:
(a) applications for Certificates of No Criminal
Conviction (CNCC) handled by Royal Hong Kong
Police Force:
(b)
statistics on visas issued by main destination
countries, provided by consulates; and
(c) balance of migration statistics, provided by
the Immigration Department.
Each of these sources has its limitations, discussed in
detail below or in the appendices, but taken together they shed some light on the position.
CNCC
6.
The main immigrating countries require adult
applicants to produce a Certificate at some stage in the
application process. The different countries require the Certificate at different stages and the age cut-off
varies. The number of CNCCs will, therefore, exclude
children but include persons who subsequently fail to
secure a visa. The total by itself therefore does not
give us a complete picture.
There is also a time lag (of