169.—(1) This rule applies where—
(a)a trustee in bankruptcy, who has been registered as proprietor, vacates his office, and
(b)the official receiver or some other person has been appointed the trustee of the relevant bankrupt's estate, and
(c)the official receiver or that person applies to be registered as proprietor in place of the former trustee.
(2) The application referred to in paragraph (1)(c) must be supported by the evidence required by rule 168(2)(c).