157Powers of arrest: supplementary provisions
(1)If in exercise of its power under section 152(6) or section 153 the High Court or a county court attaches a power of arrest to any provisions of an injunction, it may provide that the power of arrest is to have effect for a shorter period than the other provisions of the injunction.
(2)Any period specified for the purposes of subsection (1) may be extended by the court (on one or more occasions) on an application to vary or discharge the injunction.
(3)If a power of arrest has been attached to certain provisions of an injunction by virtue of section 152(6) or section 153, the court may vary or discharge the injunction in so far as it confers a power of arrest (whether or not any application has been made to vary or discharge any other provision of the injunction).
(4)An injunction may be varied or discharged under subsection (3) on an application by the respondent or the person on whose application the injunction was made.