That's all very well on paper wagging finger. But it isn't a level playing field and some departments have been deemed so important as to be ring fenced from cuts.
The extremely small saving to the budgets of these forces that NPAS pretends to offer, is far outweighed by the impact of removing a/c from service.
Go to merseyside and ask the cops there how often a "visiting" a/c are actually catching baddies and dropping on pursuits..!
The "pennies make pounds" statements is what politicians use. Just before they go and blow 10 times that saving on some other scheme.
We're all in it together remember.
Some more so than others.
NPAS is just another ineffective cost cutting exercise destroying the hard work done over the previous decades.