Niknak may be interested to know that I know Stornoway quite well, and operate into it on a regular basis - sometimes twice daily in a Saab.
As to ATCO/FISO matters, I have held both UK licences in the past.
You are right in saying FISO could only handle one IFR aircraft at a time. The west coast sector would have to provide a quasi approach function.
The point is that some movement would be better than no movement even if it was one at a time until the manning levels can be restored.
Stornoway find themselves in this pickle due to poor planning.
As to active danger areas - ATCOs make mistakes like everybody else.
