44.—(1) Pension sharing is available under this Chapter in relation to a person’s shareable state scheme rights.
(2) For the purposes of this Chapter, a person’s shareable state scheme rights are—
(a)his entitlement, or prospective entitlement to a Category A retirement pension by virtue of section 44(3)(b) of the Contributions and Benefits Act (earnings-related additional pension), and
(b)his entitlement, or prospective entitlement, to a pension under section 55A of that Act (shared additional pension).