In article ,
John Cartmell writes:
How about legal restraints on companies that sack employees with no
warning and for no reason?

Well that would hardly apply in this case.
Since the employer spent some 2 hours warning the employees what
would happen if they didn't return to work, the legal view was
that for those employees on strike, the employer acted within
the law, i.e. both warnings and reason were given. It would seem
that some of the employees dismissed were not involved in the strike
and in these cases, the employer acted illegally. I've heard on the
news since that those not involved in the strike (some staff on sick
and maternity leave) will be offered their jobs back.

--
Andrew Gabriel