Though if you sack those who go out illegally on the first day (experience speaking), then that's usually the last day of a strike.
Mine to.
My personal belief is that BA won’t dismiss staff for striking, partly because BA has got itself into such a position where it doesn’t matter too much, operationally, if they do strike and partly because my own observations of the company is that they are actually quite a decent employer.
Sure they are a huge employer which results in a less flexibility than you might get in a much smaller firm where the boss really does know you, but compared to others of their size they are very good indeed.