Nuclear Cooperation Agreements: implementation guidelines for operators

Technical guidance for nuclear operators on post-Brexit reporting requirements related to Nuclear Cooperation Agreements.



This joint BEIS / ONR guidance covers future reporting requirements for operators. These reporting requirements will allow the UK to comply with Nuclear Cooperation Agreements and other obligations arising from international trade following the UK’s withdrawal from the European Atomic Energy Community (Euratom).

The guidance covers a number of areas, including:

It will take effect from:

  • 1 November 2019 if the UK leaves the EU with no deal on 31 October


  • 1 January 2021 if a deal is reached with the EU (at the end of the Implementation Period)

We want this guidance to be clear and helpful to operators. If you have any comments please send them to by close 31 August 2019.

Published 27 June 2019