I have read the North American comments on this thread regarding community and other types of policing with interest. I think of information for policing / law enforcement / public security / national security / counter-terrorism in five stages:

1) people have information that is useful for the police and identify its value
2) people need to be motivated to communicate the information
3) people need to know how to pass the information on (direct or indirect)
4) the police for example need to have structures to capture the information offered and is passed to the right place (as opposed to just data capture)
5) does the person who had the information need to be updated when it reaches the right place? (I would argue yes, unless not requested)

Community Orientated Policing (COP) is its many variants addresses invariably only some of the stages. Much of crime, let alone terrorism, is hidden from the public's view.

IO should address points 1-3.

A few thoughts from this armchair.

davidbfpo