Here are the stats for the year 2023/24 for those still interested. Flying hours are down, but only slightly, apart from the Fixed Wing which are down by a third from last year. All but two Forces are paying more than last year.
The way that NPAS charges Forces is still a mystery. Although they don't charge on a per Actioned Call basis, it's a handy way of comparing, so Norfolk paid the equivalent of £15,387 for their 18 Actioned Calls, whereas Gwent paid £1486 for their 449. I shall try asking NPAS again.