These are the requirements for the making of a disclosure order.
There must be reasonable grounds for suspecting that—
There must be reasonable grounds for believing that information which may be provided in compliance with a requirement imposed under the order is likely to be of substantial value (whether or not by itself) to the investigation for the purposes of which the order is sought.
There must be reasonable grounds for believing that it is in the public interest for the information to be provided, having regard to the benefit likely to accrue to the investigation if the information is obtained.