Not really my place to butt in as a humble SLF, but a couple of queries:
in the judgment as described by FL there is no mention of BA changing the rules, which surprised me somewhat. For me it is the single point on which the direction of my sympathy lies - earlier in the thread it has been described several times how the rules regarding minimum experience were changed between the application for part time working and the decision. Does this mean that the rules weren't in fact changed, or that the tribunal didn't regard the change as a signnificant event?
Most of us in our working lives make judgements about matters based on what we know/believe our company's rules are, without checking with HR every 5 minutes. Certainly when my wife and I had an addition 5 years ago we looked at the rules regarding time off for new fathers (was up to 5 days at managers discretion at that point). That information (my boss told me that the discretion could be assumed as far as he was concerned) dictated our plans for the year in terms of juggling my annual leave. Had they changed the rules just before the birth to rescind the time off option, then I too would have been livid (not to go as far as a tribunal, but the point is the same). Happily for me the rules did change, but to give 10 days off automatically, which was nice.
From what has been written here I would tend to agree that BA messed up their defence somewhat as far as the safety angle is concerned - they appear to have displayed the symptom that many on here have which is to assume they just have to say the 's' word and everyone will jump into line. That isn't to deny that safety is top of the priority list, but it does sometimes seem to get used when what the user is really saying is 'shut up and do what you are told' which isn't quite the same thing.
I await the appeal with interest.
PS: is the alleged second pregnancy for real, or just an urban legend? Ms Starmer has every right to procreate as she sees fit, but in this case the timing would seem a little unfortunate if it is indeed true.