Not so.

Currently all police forces are separate and have central oversight and standards. Keep these two as they are and the rest are private.

Many Public institutions go to private companies for training. As the private companies are accredited to train at a certain standard they then can undertake this.

You'd be amazed at how private companies manage to work together all the time. It's surreal. Cars are made. Foodstuffs are shipped to shops, buildings are created. All without the state needing to be in charge of ever stage to make it work. Some have even noticed that this is done more efficiently than if all were owned by the state - although in theory that should be impossible.

The whole point is that different areas do things slightly differently as opposed to the "one size doesn't fit anyone" approach. The forces would be far more likely to adapt and learn off each other.

"If a Supermarket makes a change to improve efficiency / services / profits within a week all the other supermarkets are doing it. If a Hospital makes a similar change, within a week all others are saying it's impossible / dangerous / counter-productive".