As has been pointed out, the UK has a very good coverage of Ambulance Helicopters but the point is that the funding is all charitable and extremely finite.
All of our our Air Ambulance crews (be they pilots, Docs, Nurses etc) are extremely talented and dedicated people, their talents are very well utilised right along the broad spectrum of medical emergencies and meet the requirement of the service they provide, the last thing we need is for their skills to be diluted.
To put into perspective, would you really want ground ambulances and paramedics to be split into serving adult and pedriatic needs?
The sensible answer is no.
The main objective of any Air Ambulance Service is to "Scoop and Run", get the patient airborne and to the nearest hospital capable of giving the patient the best possible treatment.
To argue otherwise shows an enormous ignorance of what both helicopter and fixed wing air am.bulances are there for