Investigatory Powers Bill

The noble Earl recognises in his amendment that legitimate trade union activities would not of themselves be sufficient to establish the necessity of a warrant. I wonder whether the Government’s position is that they also recognise that legitimate trade union activities could not be relevant to the issue of a warrant, because the amendment does not go that far. If the Government do not recognise that, can they give a practical example of where legitimate trade union activities—I emphasise legitimate—could even be relevant to the issue of a warrant?