Withdrawal Agreement: Attorney General’s legal opinion on the Joint Instrument and Unilateral Declaration

Lord Hannay of Chiswick Excerpts

Tuesday 12th March 2019 Lords Chamber

[Lord Keen of Elie]

With respect to the noble Lord, Lord Campbell of Pittenweem, I must say that I entirely disagree with his analysis. The whole point of the present withdrawal agreement and the Northern Ireland protocol is to ensure that we adhere not only to the terms but to the spirit of the Belfast agreement. That is why the backstop has been formulated in the manner in which it has. We will leave the backstop only when, or if, there is a need to put in place alternative structures that do not require a hard border between Northern Ireland and the Republic of Ireland. I reiterate my belief that we will never actually enter the backstop in the first place. We have that period up to December 2020 in which to address this issue and it is not beyond the wit of man or alchemist to resolve such an issue.

[Lord Hannay of Chiswick (CB)]

My Lords, the Attorney-General stated:

“A unilateral declaration by one party to a bilateral agreement constitutes an authentic interpretation of the treaty if it is accepted by the other party”.


Does he not find that a little odd? It would not then be a unilateral statement at all but a joint statement. On what authority did the Attorney-General say that the EU has agreed to the UK unilateral but it will not object to the UK unilateral statement? I see no trace of that in any of the documents.

Secondly, the use of the arbitration procedure remains shrouded in mystery as a result of the provision in the withdrawal treaty that any dispute involving the interpretation of EU law has to go to the European Court of Justice and not the arbitration panel. It that likely to be the case in most of the disputes?