(1) For the purposes of section 24B(5) of the Act (prescribed person in prescribed circumstances to notify the Secretary of State of application to alter etc. a maintenance order) the prescribed person is, and in paragraph (2) below that expression means,—
(a) in England and Wales—
(i) in relation to the High Court, where the case is proceeding in the deputy principal registry the senior registrar of that registry, and where the case is proceeding in a district registry the district registrar;
(ii) in relation to a county court, the proper officer of that court within the meaning of Order 1, Rule 3 of the County Court Rules 1981 ; and
(iii) in relation to a magistrates' court, the clerk to the justices of that court; and
(b) in Scotland—
(i) in relation to the Court of Session, the deputy principal clerk of session; and
(ii) in relation to a sheriff court, the sheriff clerk.
(2) For the purposes of that subsection the prescribed circumstances are that before the final determination of the application the Secretary of State has made a written request to the prescribed person that he be notified of any such application, and has not made a written withdrawal of that request.