According to the BBC, May said her agreement promises a "brighter future" for the UK and leaving the EU next year will be "a moment of renewal and reconciliation for the whole country". EU leaders are in Brussels for a summit to decide whether to endorse the deal.

European Council chief Donald Tusk has recommended all countries approve it. Spain which had threatened to boycott the summit will attend after a last-minute disagreement over Gibraltar was resolved on Saturday.

However, even if the EU agrees to the deal, it needs to be passed by the UK Parliament, and many MPs including in Mrs. May's own Conservative Party have stated they will vote against it. EU leaders will be asked to approve two key Brexit documents: the political declaration and the EU withdrawal agreement.