Cheetah_SA, perhaps my BA boarding pass was not honored for entrance to the Premier Club because it was an outbound flight (JNB-LHR) rather than inbound. I dunno. I was by that point disheartened anyway as the front desk people at the IC assured me that my RA card would get me into the club. (I eventually just went back to the terminal and used the Terraces lounge, which was not especially pleasant.)