@solid247 - that's useful info, thanks for posting it.
I posted a comment on bertiebat's idea post regarding extending the life of SIMs by some means - perhaps either by "refreshing them" via the GG web site or giving bulk ordered SIMs a longer expiry than one-offs.
In light of your explanation about the existing pre-allocation system - I wonder how difficult technically it would be to selectively extend the life of individual or blocks of SIMs where good reason to do so exists?
If we can save GG money and reduce waste this has to be worth exploring...
Thanks gurupandit for dropping in (especially since I assume you are off over the weekend).
So it appears from your answer that there is a plan for non activated SIMs (which you call pre-activated) to be able to be activated at any point in the future (and therefore never expire in practical terms).
Just one final point though, in order for the SIMs to 'stay live' indefinitely from the recruiters point of view I assume that the new functionally would have to be in place before or at the same time you recoup the existing phone numbers/MSISDNs from unactivated SIMs. Is this that the plan?
If there isn't going to be any expiring in practical terms then it would be a great help to those that want to keep SIMs for recruiting to know that these don't really expire and are safe to hand out at any point.
With this in mind it would nice to change all references to unactivated SIMs expiring from the T&Cs and Knowledge Base as soon as possible to stop people wasting existing SIMs.
As solid (thanks mate) has already suggested it would be nice to have a blog telling us more about the plans in this area and to promote the knowledge that unactivated SIMs are going to be safe from expiring in the future.