Totally agree with SARWannabee and TeeS - some well motivated people but varying policies and protocols. That means some patients get restricted or suboptimal care - either from under treatment or over treatment - they cant all be correct
If the NHS 'ran' the medical aspects nationally we would see exactly the same as in NHS operating theatres or X Ray - some minor variations but national minimum standards, an accepted protocol for most situations etc etc. Clinicians could properly apply pressure for optimal care. Errors or negligence would be seen as such and, in some cases at least, drive improvement or change.
The current situation is rather like buying a new aircraft, tearing up the manufacturer's SOPs and writing your own........