This Order declares the Comprehensive and Enhanced Partnership Agreement between the European Union and the European Atomic Energy Community and their Member States, of the one part, and the Republic of Armenia, of the other part, signed at Brussels on 24th November 2017 (the Agreement), to be an EU Treaty as defined in section 1(2) of the European Communities Act 1972.
Link: The European Union (Definition of Treaties) (Comprehensive and Enhanced Partnership Agreement) (Armenia) Order 2018
Source: Legislation .gov.uk