Holding another referendum on the EU would "break faith with the British people", Theresa May will warn MPs.
Mrs May defended last week's draft agreement for leaving the EU and said there was a "critical" week ahead.
British Prime Minister Theresa May’s Conservative Party began gathering for its annual conference on Saturday, bitterly divided over her plans to leave the European Union which threatens to derail any deal and put her own job in doubt.
British Prime Minister Theresa May defended her Brexit plan on Wednesday, saying it delivered on the vote of the people to leave the European Union.
EU sources who have seen drafts of white paper say proposals would never be accepted
More than 100,000 people march down Whitehall to demand a second referendum