The UK Government has issued a statement to say that they are making good progress in negotiations for a new bilateral safeguards agreement with the IAEA. The new agreements are of a similar format to those under the current trilateral arrangement. The UK expects to ratify these agreements during 2018.
https://www.nucnet.org/all-the-news/2018/03/27/brexit-uk-making-good-progress-on-new-safeguards-agreements-with-iaea
