For SOSR to be on legally sound ground the employer must NEED to introduce new terms and conditions, not want to!
Wouldn't you say that making sustained losses of several hundred million was enough reason to argue that the market has changed and requires new T&C's?
There is no point in considering something for the sake of it.
As the thread title is "BA Strike - Your Thoughts and Questions", I thought that this was a legitimate subject.
Perhaps the thread should be retitled "The bash BASSA thread."
By the way, the moderator title seems to have slipped from your handle, just thought you whould be aware.