Courtney Mil,
Ref your post #70, you are absolutely right.
Everyone at the coalface advised some years ago against shutting down the nav training line based on the then projected squadron numbers/aircraft OSDs, as historically things tend to "run on".
Funny old thing, we now have an "extra" GR4 squadron running on and, surprise, surprise, the RAF is now short of FJ navs, never mind trying to crew a possible(?) P8 fleet.
The Marham GR4 squadrons are so depleted of navs compared to pilots, that the most common cause of sim slots being cancelled is - no nav available.
It will only get worse - I am so glad I am now an observer from the outside!