Oh, well ... Unite and BA are [sort of] talking. No doubt that will lead to nothing, especially if "negotiations on the outstanding issues of substance will directly include your [BASSA] representatives".
So, in the almost certain scenario that BA will not lie down and be kicked by the 5,800 ... it would appear that the Unions will just have to put their members' money where the leadership's mouth is. Good luck: you'll need it.
As to whether the travelling Public know or care, I have no doubt that some elements of the Meeja will make the expected noises.
"DON"T PANIC" ... BA flies the vast majority of flights, regardless of IA by BASSA. I'm less worried about the threat of IA than I am about the weather at my intended destination later this month.