Again, I know I sound pedantic, but...
I don't understand your last post? The Collective Agreements form part of our contract of employment -
the where appropriate part is to do with which fleet you are working on i.e. it would not be appropriate to try to use the WW agreement on EF and vice versa 
It doesn't actually say that though, does it? (The underlined part of the above). Is this your interpretation, or is this written somewhere? I certainly haven't seen it...
Gg