The interesting bit I found there was One accident every 53,000 miles. That must work out about the same or worse than an average driver? Ok they often drive in different circumstances, but have extra training to offset that.
Which seems to indicate that human nature is the same and mistakes will be made?
It's impossible to come to that conclusion, because you are comparing 2 different things.
As I have said previously, an accident to a Police vehicle is not the same as an accident as defined for the rest of the population, ie S25 RTA.
So for example, if you come back to your vehicle parked in your drive, and find a scratch on the side, it is not an accident, if I went to a police car in the station yard, and found the same scratch, it is reported as a POLACC. I had a touch in the station yard when I was a very young policeman, it was not only a POLACC, it was down to me. That sort of thing is counted in the stats you mention, it's not for everyone else.
The figures you quote don't just involve police cars either, the numbers include all Police Officers and Civvies employed by the Police Authority. So, it doesn't mean what we usually mean by Police Cars, it includes the dispatch van, civvies Crime Scene vans, CID officers using their own cars on duty, many of whom are not trained drivers.
You also assume that Hants Police miles per accident are representative of every force or the Country. Hants isn't a very big force, TVP is, in terms of manpower and area, I doubt if the 53,000 number applies to TVP, or the Met for example.
You need to be very careful basing an accusation of driver standards based on the figures you quoted. they don't mean what you have presented them as, and without a full picture of what's included your assumptions are flawed.