Canada  European Union  Hong Kong, China  Iceland  Israel  Japan  Korea, Republic of  Liechtenstein  Moldova, Republic of  Montenegro  Netherlands with respect to Aruba  New Zealand  Norway  the Separate Customs Territory of Taiwan, Penghu, Kinmen and Matsu  Singapore  Switzerland  Ukraine  United States”.  Amendments to the Concession Contracts Regulations 2016  3. —(1) The Concession Contracts Regulations 2016( a ) are amended as follows.  (2) In regulation 2 (interpretation), in paragraph (1)—  (3) In regulation 51 (duty owed to economic operators from certain other states)—  (4) After regulation 51 insert—  (a) in the definition of “GPA”, for “between certain parties to the World Trade Organisation  signed in Marrakesh on 15th April 1994 as amended before IP completion day” substitute  “signed at Marrakesh on 15th April 1994, as amended on or before the United Kingdom’s  accession”;  (b) after the definition of “GPA” insert—  (a) listed in Schedule 1A; or  (b) a member State of the EU;”.  ““GPA party” means any country, state or separate customs territory that is—  (a) in the heading, for “certain other states” substitute “countries with whom the EU has an  international agreement, other than the GPA”;  (b) in paragraph (1)(a), omit “Condition 1, Condition 2 or”;  (c) omit paragraphs (2), (2A) and (4).  ( a ) S.I. 2016/273, as amended by S.I. 2019/624 and S.I. 2020/1319.  3