There are currently THREE groups proposing a Children's Air Ambulance Service in the UK although one is said to be 'resting' rather than actively fundraising. Children's AA based Torquay but originally intended to operate out London using an S-76 by preference. The new NETS UK apparently based on an Australian model based in Yorkshire that was a Childrens AA a few months ago until that model name was clearly being dissed by the rest of the AA and the third sleeping model is called Lucy's - I only heard of that one this week. It is a charity.
The industry in general is anti this prospect of a specialist machine cherry picking the relatively few CAA type operations but requiring just as much money [if not more] to exist and yet sitting on the ground longer sucking in charity money waiting for an opportunity that is unlikely to be on the doorstep [and therefore likely to be taken by the nearest helicopter anyway].
Children's AA are quite successful in the USA but they are usually cash cows and their passengers or their insurance companies pay for the privilige.