Thanks for the informed replies chaps. I did think that there was more to it than was broadcast during the show, but the way the medical evacuation flight came across on the programme was a bit too jobsworth for my liking. BTW, I had noticed some of the inconsistancies myself, hence my comment about the editing of the programme....There is another discussion going on about it here too, though not quite as informed by the look of it:
http://www.pprune.org/forums/showthread.php?t=244766
It would seem that the nightime limitation on the dedicated privately funded Ambulance helicopters is quite a drawback, is there a case for having a medic with a Police chopper permanantly considering their greater capability?
Regards, SD..