I have a BA companion voucher which I wish to use on a business class flight to the USA next Aug. I dont want to wait for the return flight to be available as by then the outbound flight may have no availability. Advice online seems to be to book the outbound flight as soon as its available then call BA to add in the return flight but if I just book the outbound as a single fare with my companion voucher will the system accept the voucher as valid for the return flight ? Is an alternative to book a return with any return date ( even maybe the same date as outbound ) then call BA to change the date on the return flight. Or is there an easier way to do this especially as calling BA is a nightmare at the moment ?