77
They would not be redundant, if they were to be re-engaged. They would be dismissed and re-engaged. There would then be a potential unfair dismissal claim, but BA would probably argue some other substantial reason SOSR. But this would have to be for all crew, as I see it, not just those that went on strike.
They could all be made redundant and offered the chance to apply for the new fleet contract as a suitable alternative, but I imagine that many would not see it as suitable, if it was this market rate + 10% deal. I do not know enough about employment law to see if there was enough change in the role, to allow that to happen. I am sure BA's legal people will have done the work on this, and they have been very good up till now.