Also think about these 10 points before going, as from a HK returnee.(still working, but close to retirement, maybe the reason of returning) 3 out of 4 kids are studying in UK.(education only, doesn't imply staying there forever, as queried by others) Of course, some HKgers would go , whatever it takes. However, still need to know better details by Jan. inclusive of any welfare, renting house etc.
Heavy taxation can cause depression, too , not simply weather/sunshine.(lack of active vitamin D, can take D3 supplement)

#22
Another perspective