asked Her Majesty's Government:

Whether they will seek to hold debates in Parliament on the contents of (a) the mandate which will be agreed in Berlin on 21 and 22 June, and (b) the content of the subsequent intergovernmental treaty changing the relationship between the European Union and the United Kingdom, before the documents in question are signed by them. [HL4332]

Any new treaty would need to be agreed at an intergovernmental conference (IGC). The usual commitments, including a government White Paper prior to the IGC and evidence sessions during it, would apply as well as parliamentary ratification of the eventual treaty texts.

My right honourable friend the Prime Minister delivered the post-European Council Statement, and took questions, in another place on 25 June. The Statement was repeated in the House later the same day.