Seatt allocation and code-share
I have 2 long haul flights booked:
AY from MAN-HEL-HKG and vv - unable to pre-select seats on AY but have done so on BA.com using my ff card.
LH from MAN-ORD with LH and United and vv. Managed to book the seats via LH but not United websites (even though UA are supplying the long haul segemnt).