16. The amendments made by articles 7, 10(b) and (c) and 11 to 14 do not have effect in a case where–
(a)an application for a determination or redetermination is made before 3rd April 2000; or
(b)an application for a redetermination is made on or after 3rd April 2000 in respect of a tenancy and the application for the original determination in respect of that tenancy was made before 3rd April 2000.