5. The Authority shall delete from the Register any NIROC which—
(a)has been revoked in accordance with Article 20;
(b)has in accordance with Article 3(3) been produced as evidence or as part of the evidence required under Article 3(1);
(c)is no longer eligible to be produced as evidence or as part of the evidence required under Article 3(1);
(d)the registered holder requests should be deleted; or
(e)the Great Britain Authority has notified the Authority that the NIROC has been produced to the Great Britain Authority by a Great Britain designated supplier under a GBRO Order,
and where it is so deleted, the NIROC cannot thereafter be produced as the evidence or part of the evidence required under Article 3(1).