Here’s my prediction.
Voluntary redundancies plus a large percentage permanent pay cut (probably 15-20%). Then a few more months down the line, “Things have got worse, we are reissuing minimum notice of compulsory redundancies”. (If the above pay cuts were temporary, they are now made permanent, plus a bit more thumbscrew turning). Repeat this process until BA have knocked terms and conditions down as far as they can get them, and then there will be compulsory redundancies. “They wouldn’t do that surely?” They just have! The negotiations a month or two ago were under the same premise of removing the threat of minimum compulsory redundancy notice. Why settle for just one turn of the thumbscrews when you can turn them multiple times?