CX is only between HKG-KUL, so it's BA to HKG. It appears WTP travellers don't have very good options unless they get LHR-SIN then BA codeshare to KUL. I would guess WTP to HKG on BA metal then CX economy isn't terrible, given it's 2 hour flight from HKG. You may be able to wangle a stopover in HKG so may be attractive to some CW travellers.

It would not be unusual if there are further options in the next week or so,