Casevac, in this sense mainly refers to Police helicopters transporting critically injured patients, life or death, on a very infrequent basis and the more restrictive regulations covering this are in the PAOM.
HEMS flights by Air Ambulance whether under a PAOM, in the case of a joint Police/Air Ambulance unit or an AOC, by day or night are for the transportation of patients, not necessarily critically injured, not life or death.
Air Ambulances in the UK are still in their infancy compared to the established operations in the US. I'm sure that eventually the UK Air Ambulances will be able to provide the same service you guys do across the pond. The caution shown in the UK shouldn't be misinterpreted as phobia we're just getting the walking right before we try and run!
is how I sometimes feel when I'm asked to do the ad hoc landing thing on those dark stormy nights, without NVG.
