Interesting point LB but if BASSA does nothing (other than its ineffectual and thus completely ignorable grumblings) isn't that just fine with BA as their CC are currently working to BA's "imposed" new terms and conditions anyway? If BA have not spoken directly to BASSA since 2009 then that situation is just fine with BA as its operations are all under BA's control and any feeble attempts to obstruct unreasonably will be snuffed out by UNITE for fear of being accused of unoffical IA. OK, so WW doesn't have a Union to negotiate with for the forseeable future but BA has nothing it requires of its CC union for the immediate future and PCCC is in the wings should things change.
Are you suggesting that UNITE/BASSA could launch a legal action against BA the potential liabilities for which could exceed its war chest thus forcing it to have to settle to BASSA's terms again?