Originally Posted by rsak

I have a flight coming up on Norwegian out of LGW South. Could I book a fully flex ticket to a BA destination to use the lounge and then cancel it later?

Besides the legality (or not) of the situation, my question is a practical one - if I have come through security on my Norwegian BP, will I be able to use my BA BP to use the lounge, or will the lounge agents be able to somehow tell that I haven't cleared security?