170.—(1) A secured creditor may, with the agreement of the administrator or the permission of the court, at any time alter the value which that creditor has, in their proof of debt, put upon their security.
(2) However, if a secured creditor—
(a)being the applicant for an special administration order, has in the application put a value on their security; or
(b)has voted in respect of the unsecured balance of their debt,
that creditor may re-value their security only with permission of the court.