22.—(1) A person who is entitled to the immediate payment of a pension under the Scheme under a regulation that requires the person not to be in HSC employment may only be an active member in accordance with—
(a)regulation 49 (partial retirement (members aged at least 55)),
(b)regulation 112 (effect of re-employment on tier 2 ill-health pensions),
(c)regulation 57 (exceptions to requirement that HSC employment must have ceased), or
(d)Chapter 7.
(2) A person is not eligible to be an active member of the Scheme if the person—
(a)became a pensioner member of the HPSS Superannuation Scheme 1995 before 1st April 2008, or
(b)became a pensioner member or a deferred member of that Scheme on or after that date.
(3) A person is not eligible to be an active member of the Scheme in respect of service in an employment if the person is an active member of a superannuation scheme established under Article 3 or 11 of the Superannuation (Northern Ireland) Order 1972 in respect of service in that employment.
(4) A person who is employed by a GDS provider (other than a dentist performer) is not eligible to be an active member of the Scheme in respect of service in that employment.
(5) A person who holds an honorary appointment and does not at the same time hold any other employment which entitles him to be a member of the Scheme is not eligible to be an active member of the Scheme.
(6) A person is not eligible to be an active member of the Scheme in any further employment if the person—
(a)becomes entitled to a tier 2 pension under regulation 52, and
(b)opts to exchange that pension for a lump sum in accordance with regulation 59.