So presumably UK aircrew can now refuse to operate any flight to a country from which people feel a justified desire to leave (eg Zimbabwe, Indonesia or China, to name but a few).
After all, your employer has under UK law a duty of care towards you, and it now appears that UK law permits the use of threats and force against people, as long as they are in command of a mode of transport. I think I'd worry if I drove a truck to and from Eastern Europe as well.
So given that the law will not protect you against assault or murder, how can a company force you to put yourself in harm's way?
Truly bizarre ruling.