At any time between the making of an order under section 163 and the determination or settlement of the complaint, the employer or the employee may apply to an employment tribunal for the revocation or variation of the order on the ground of a relevant change of circumstances since the making of the order.
Sections 161 to 163 apply in relation to such an application as in relation to an original application for interim relief, except that—
no certificate need be presented to the tribunal under section 161(3), and
in the case of an application by the employer, section 162(2) (service of copy of application and notice of hearing) has effect with the substitution of a reference to the employee for the reference to the employer.