All those involved in the decision to arrest Damian Green should hang their heads in shame

The statement from the CPS explaining why Damian Green and Chris Galley will not be prosecuted shows just what a scandal it was that Green was arrested in the first place and that his Parliamentary office was searched. Here’s the key section:

“I have concluded that the information leaked was not secret information or information affecting national security:

It did not relate to military, policing or intelligence matters. It did not expose anyone to a risk of injury or death. Nor, in many respects, was it highly confidential. Much of it was known to others outside the civil service, for example, in the security industry or the Labour Party or Parliament. Moreover, some of the information leaked undoubtedly touched on matters of legitimate public interest, which were reported in the press.” The police must have known this before they decided to arrest Green and enter the Commons. Why on earth then did they proceed?