RTG - Definately sad to see colleagues split up and move on. At least in the intermediate term TUPE assures a job.
However, when the handling agent who receives these TUPE'd staff notices how employee costs rise significantly compared to "their" own staff costs, they will no doubt put pressure on staff to be "promoted" to new roles..of course changing employment T&Cs too! Unions will need to be strong here and back these staff members.
There are common misconeceptions about TUPE protecting staff for x amount of years/months. However in truth, it just means a transfer of employment on current terms. If the new employer wishes to change these, they can do so as and when they like. Many choose not to since it will of course create annomosity etc. However in this current climate, financial based decisions will no doubt have a stronger influence.
Good luck to all those who will TUPE accross.
Maybe when airlines notice the deterioration in service provided due cost cutting, (less staff allocated per flight/less equipment/ training etc), then they may realise the effect.
Handling agents who can survive loosing contracts initially may be able to be in a stronger position to win the work back.