4. After paragraph 2 insert–
“2A. For the purposes of paragraphs 1(a) and 2(c), (ca) and (cb) above, work done in a school, further education institution or hostel is treated as not being done in that place to the extent that it is done by a member of a Parent Council, Combined Parent Council or other parental body.
2B. For the purposes of paragraphs 1(a) and 2(c) and (ca) above, work done in a school or further education institution is treated as not being done in that place to the extent that it–
(a)involves an activity which is primarily intended for persons aged 18 or over; and
(b)if done in a further education institution, is done by a person who is not employed by the further education institution.”.