It so happens that I flew two round trips HKG-LHR in the past 3 weeks, in F. F was predominantly caucasian male passengers. Of the 6 F seats, the most I have seen HK people was 3 (myself and a HK couple). On two flights, I was the only Chinese and the other 5 were caucasian men.

Incidentally, the F cabin was full on all 4 flights.

I often fly J but it so happens it has been F on these 2 trips. Had a brief look at J cabin and many were caucasian men.

The TIGER MUM / TAI TAI theory collapses.