4.—(1) Subject to sub-paragraph (2), employment as a teacher in a school which is an accepted school.
(2) The service of a teacher in an accepted school is not pensionable employment if—
(a)the teacher is a proprietor of the school; or
(b)paragraph 2(1)(a) applies to the school and the teacher’s employment in the school immediately before 1st April 2015 was not reckonable service within the meaning of the 2005 Regulations.