Desertia
Do you really believe that Unite are so stupid as not to know the meaning and scope of industrial agreements. Of course they know, but what they are hoping is that their poor benighted membership don't know and that they can thereby convince them that BA is a cruel, heartless employer. It's called "propaganda".
I do wonder if the Unite membership know that between 2005 and 2008, Unite is reported as having contributed £11,000,000 to the Labour party, making them the largest contributor of all. Unite accounts for 41% of labour party funds. A fine use of membership fees when you consider the damage done to the airlines through passenger taxes, not to mention Mr Brown's raid on the pension fund!