Felt I ought to respond to this, having seen the way they do it in Canada. In Canada they've gone further than the RTA charging there is in the UK. If you need an ambulance, you pay for that ambulance - full stop. If an ambulance gets called by someone else and doesn't actually need to treat a patient, then sometimes the charge can be waived, but even if it's just to put a plaster on a finger, if a patient receives treatment, the patient pays for the ambulance call out. You'd be surprised what that does to time-waster figures. It's about time the UK did that too.