152Enforcement notices: restrictions
(1)The Commissioner may not give a controller or processor an enforcement notice in reliance on section 149(2) with respect to the processing of personal data for the special purposes unless—
(a)a determination under section 174 with respect to the data or the processing has taken effect, and
(b)a court has granted leave for the notice to be given.
(2)A court must not grant leave for the purposes of subsection (1)(b) unless it is satisfied that—
(a)the Commissioner has reason to suspect a failure described in section 149(2) which is of substantial public importance, and
(b)the controller or processor has been given notice of the application for leave in accordance with rules of court or the case is urgent.
(3)An enforcement notice does not require a person to do something to the extent that requiring the person to do it would involve an infringement of the privileges of either House of Parliament.
(4)In the case of a joint controller in respect of the processing of personal data to which Part 3 or 4 applies whose responsibilities for compliance with that Part are determined in an arrangement under section 58 or 104, the Commissioner may only give the controller an enforcement notice in reliance on section 149(2) if the controller is responsible for compliance with the provision, requirement or principle in question.