http://www.legislation.gov.uk/id/eudn/2020/2214

ANNEX

In Annex I to Implementing Decision 2012/137/EU, the following entry is inserted after the entry for Switzerland:

‘GB
United Kingdom3
In accordance with the Agreement on the withdrawal of the United Kingdom of Great Britain and Northern Ireland from the European Union and the European Atomic Energy Community, and in particular Article 5(4) of the Protocol on Ireland/Northern Ireland in conjunction with Annex 2 to that Protocol, for the purposes of this Annex references to the United Kingdom do not include Northern Ireland.’.

‘GB	United Kingdom3
In accordance with the Agreement on the withdrawal of the United Kingdom of Great Britain and Northern Ireland from the European Union and the European Atomic Energy Community, and in particular Article 5(4) of the Protocol on Ireland/Northern Ireland in conjunction with Annex 2 to that Protocol, for the purposes of this Annex references to the United Kingdom do not include Northern Ireland.’.