One of the reasons given is that "Mr Cameron told MPs: "At the moment, the police system is too closed. There is only one point of entry into the force. There are too few – and arguably too similar – candidates for the top jobs. I want to see radical proposals for how we can open up our police force and bring in fresh leadership."
So bringing in people from the Services as direct-entry mid-ranking officers is quite ironic.
Perhaps they'll make it two-way
Longer article in the Telegraph