Article 21 Revocation Original text. Later amendments are not shown. The following instruments are hereby revoked— (a) the Bovine Spongiform Encephalopathy Order 1991f1; and (b) the Bovine Spongiform Encephalopathy (Amendment) Order 1996f2. Annotations Footnotes f1 S.I. 1991/2246. f2 S.I. 1996/962. ← Article 20 Article 21 Signature →