5.—(1) A person otherwise qualified for registration is (despite sections 15(1)(d) and 16(1)(d) and (2)(d) of the 2003 Act) entitled to be registered in the register if he will attain voting age before the end of the period of 12 months beginning with the 1st December next following the relevant date, but—
(a)his entry in the register shall give the date on which he will attain that age; and
(b)until the date given in the entry he shall not by virtue of the entry be treated as an elector for any purposes other than those of an election the date of the poll for which is the date so given or any later date.
(2) In this paragraph “the relevant date”, in relation to a person, means—
(a)the date on which an application for registration is made (or, by virtue of paragraph 6, is treated as having been made) by him;
(b)in the case of a person applying for registration in pursuance of a declaration of local connection or a service declaration, the date on which the declaration was made.