25.—(1) The entry of a person entered in Part 1 or 2 of the Register pursuant to an application under article 23 is valid for the period of one year beginning with the date on which the entry was made.
(2) Each renewal of such an entry pursuant to a further application under that article extends the validity of the entry for the period of one year beginning with the relevant date.
(3) If the entry of a person in Part 1 or 2 of the Register ceases to be valid under this article then, except in such circumstances as may be prescribed, that person is to be treated for all purposes as no longer being entered in that part of the Register and accordingly the Registrar must remove the entry from the Register.
(4) Where the Registrar removes the entry of a person from the Register under paragraph (3), the Registrar must send to that person at that person’s last known home address a statement in writing giving that person notice of the removal and the reasons for it.
(5) In paragraph (2) the “relevant date”—
(a)on the first renewal of an entry, means the first anniversary of the date on which the entry was made;
(b)on a subsequent renewal of an entry, means the anniversary of the date on which the entry was made that occurs next after the making of the application for renewal.