The court may vary or discharge an injunction under section 1 on the application of—
the person who applied for the injunction, or
the respondent.
In subsection (1) "the court" means—
the court that granted the injunction, except where paragraph (b) applies;
the county court, where the injunction was granted by a youth court but the respondent is aged 18 or over.
The power to vary an injunction includes power—
to include an additional prohibition or requirement in the injunction, or to extend the period for which a prohibition or requirement has effect;
to attach a power of arrest, or to extend the period for which a power of arrest has effect.
If an application under this section is dismissed, the party by which the dismissed application was made may make no further application under this section without—
the consent of the court, or
the agreement of the other party.
Section 3 applies to additional requirements included under subsection (3)(a) above as it applies to requirements included in a new injunction.