16.—(1) If an application under paragraph 11 or 12 is accepted by the Court, the union (or unions) may not withdraw the application—N.I.
(a)after the Court issues a declaration under paragraph[F2 19F(5) or] 22(2), or
(b)after the union (or the last of the unions) receives notice under paragraph 22(3) or 23(2).
(2) If an application is withdrawn by the union (or unions)—
(a)the Court must give notice of the withdrawal to the employer, and
(b)no further steps are to be taken under this Part.