Erm…this is getting circular.
BA allows ONE guest per entitled passenger.
Them’s the rules.
As I outlined above, it is easy for additional people beyond that single guest to gain access; simply demonstrate your loyalty to BA by ensuring your guest purchases a lounge access-entitled fare or upgrades using miles.
I don’t want the lounge overrun with the multiple nannies/aged parents/children of oneworld elites and like many other frequent travellers would strongly object to any change in the current simple and well-understood lounge access policy.