6.—(1) This paragraph applies in relation to a member of this scheme (P) who—
(a)is in pensionable service under this scheme; and
(b)has not reached normal pension age under this scheme.
(2) P or, with P's consent, P's employer may elect to pay contributions for an additional pension in respect of P (“additional pension election”).
(3) An additional pension election—
(a)must state whether the election is for—
(i)an additional (self only) pension; or
(ii)an additional (self only) pension and an additional (surviving adult) pension; and
(b)specify the annual rate of additional (self only) pension to be paid with P's retirement pension.