Prior to its conclusion and subject to reciprocity, the Agreement referred to in Article 1(2), as regards matters falling under the Euratom Treaty, shall be signed and shall be applied on a provisional basis as from 1 January 2021, pending the completion of the procedures necessary for its entry into force.

The notification to the United Kingdom in accordance with Article 12(2) of Decision (EU) 2020/2252 regarding the completion of the Union’s internal requirements and procedures necessary for provisional application shall be given by the President of the Council provided that, prior to the date referred to in paragraph 1, the United Kingdom has notified the Union that its internal requirements and procedures necessary for provisional application have been completed.

The versions of the Agreement referred to in Article 1(2) in the Bulgarian, Croatian, Czech, Danish, Dutch, English, Estonian, Finnish, French, German, Greek, Hungarian, Irish, Italian, Latvian, Lithuanian, Maltese, Polish, Portuguese, Romanian, Slovak, Slovenian, Spanish and Swedish languages shall be subject to final legal-linguistic revision.

The language versions resulting from the legal-linguistic revision referred to in the first subparagraph shall be established as authentic and definitive by exchange of diplomatic notes with the United Kingdom.

The authentic and definitive texts referred to in the second subparagraph shall replace ab initio the signed versions of the Agreement referred to in Article 1(2).