The NHS is using the private sector more and more to try and reduce waiting lists.
All well and good BUT it means that many private patients now have to wait far longer, as the NHS pay more for an op than an insurance company does and both pay far less than a self funded patient will.
The Private sector hasn't got unlimited capacity, so as more move to this way of getting treatment, lists will grow, companies will then seek to recruit more staff from the NHS, making the NHS situation even worse, remember too, the private sector rarely has the means to treat complications, so these patients end up in the run down NHS.
It really is a mess and solely down to the Tories failure to fund public services, prep for demographic changes and to some extent, on us for voting for Brexit (no more EU staff working in NHS)
PHI also doesn't cover any connection to a previous condition and once you get into your 50s, premiums are very expensive nor, as the pp stated, do you get AE cover, so you'll still wait in an ambulance/corridor for days on end.