I do not know whether the Nottinghamshire NUM, as a union, has any policy on this clause, but I know that the NUM in Kent strongly petitioned against a self same clause in the Kent County Council Bill.
Of course we want to have full co-operation and consultation. That must be encouraged. But it is a contradiction in terms to think that one can force co-operation. When talking about the use of the criminal law, one is no longer talking of ways whereby organisers and police meet to discuss what is mutually beneficial. Instead, one is talking about the chief constable enforcing the criminal law. That is quite different.