This must be taken to the Employment Appeal Tribunal (EAT). The reasons given within the ruling seem extraordinarily weak. We wouldn't accept discrimination against employees with disabilities because only a small number had felt sufficiently confident to raise their concerns. Particularly as this was within an, apparently, extremely hostile organisational environment. I would happily contribute to the costs of this appeal.
As the superior court, EAT decisions create a legal precedent that all other Employment Tribunals must follow in similar cases. So this opens up a major opportunity.
Plus. If I worked for Leonardo, I would be alternately spitting flames of wrath and fluorescent bile at this result. It will hopefully encourage more of their unhappy women employees to bravely come forward.