Jaytee,
You've not quite the full story on that one.
The problem with call signs the PNAS way is that the individual aircraft keep their callsign and not that of the unit is is working with. Consequently confusion reins and nobody knows who is where and who is who or who the officer on the ground thinks they are actually working with. That's why you get NPAS xx, operated by unit NPAS yy in an area where the officers expect to be working with NPAS aa
Also kind of messes up the statistics somewhat!!!
Best thing about it all now though, is that at the quietest times of the day regions have four aircraft online, yet at the busiest times only one. Despite what is being said at all these meetings, come 02:30 only one NPAS aircraft covers the area south of Manchester. This will not change due to the continuing need for financial cutbacks.
Latest rumour; April, cuts down to 9 bases, which reflects Sir Bernard's recent statement.