While I'm not going to argue against the RM position, I also noticed strange availability planning an xONEx. Both L and D availability is almost non-existant ex-CPT in early Jan. This is peculiar because, given the rules for an xONEx, anyone exiting CPT/JNB to LHR on a RTW will have to have enterred on CX from HKG and L/D availability is wide open in the weeks prior on that route. I wonder if BA is limitting its allocation of RTW fare classes during high season?