That's a good question, and you're right in not in Lasors (unlikely it'll be in JAR FCL anyway, as it's an agreement between UK military and UK CAA only- not the whole of JAA).
Best bet is email
[email protected] and ask.
I would hazard a guess that there isn't really an expiry of the bridging package provided you're still in the military, which again you'd have to be in order to qualify as a QSP.
No point asking on here really, you need to answer from the horses mouth, especially as it's not in Lasors.
VJW