I am supposed to be flying (on CX) PEK-HKG next Monday, then HKG-LHR Tuesday night (BA 32). It seem if this continues, I should be able to move the CX flight to Tuesday morning (CX are offering free rebooking on all flights to/from HKG on 12-14 August - presume that will continue) and then, if I fly HBO, I'll be able to connect to BA 32 without leaving the airport. If HKG looks like it will be closed to all flights, I suppose an alternative is to cancel both the CX and BA flights (which should be allowed) and book an alternative flight PEK-LHR (I would need an indirect flight as I'll be entering China on the 144 hour transit without a visa). Guess it's wait and see for now!