Originally Posted by
Psowden
My reading of the rules is as posted above that if you are booked on a OW flight it shouldn’t matter who you credit your flight to. If you are OW emerald you should be able to access the lounge
That is my understanding as well and I always assumed in circumstances like yours that simply opening the BA app and showing the Silver/Gold card to the lounge agent is enough. So I'd be interested to know for sure as well.