Paragraph 11
Subject to paragraphs 12 to 14, a person to whom this Part of this Schedule applies is to be treated as having, on the date on which the second pension became or becomes payable—
ceased to be entitled to the first pension and the second pension; and
become instead entitled to payment of an annual retirement pension (“the annual pension”) and a lump sum payment (“the lump sum”) each calculated by reference to both his total period of membership in the further employment and the total period of membership taken into account in calculating the first pension.
In sub-paragraph (1) “total period of membership” includes any period by reference to which an additional benefit has been granted under regulation E13 of the 1986 regulations or under regulation 13 of the Benefits regulations (both of which concern additional benefits for certain female nursing staff).