30. The Certification Officer, on the application of a trade union or employers' association, may exempt any members' superannuation scheme which it maintains or proposes to maintain from the requirements of paragraph 23 or (as the case may be) paragraph 27, if he is satisfied that, by reason of the small number of members to which the scheme is or would be applicable or for any other special reasons, it is unnecessary for the scheme to be examined in accordance with those requirements.