Flying between London (UK) and Hong Kong in the summer of 2009:

Cathay Pacific
4 daily flights (CX 251, CX 253, CX 255 and CX 257) of which 3 always with 747-400

British Airways
3 daily flights with Boeing 747-400, all leaving London in the evening and arriving in Hong Kong in the afternoon the next day.

Virgin Atlantic
2 daily flights (VS 238 and VS 200) leaving London (LHR) at 5:15 and 10:30 in the evening. Arrivals in Hong Kong at 12:30 and 5:50 in the afternoon.

Air New Zealand
1 daily flight with 777-200ER