UK Prime Minister Theresa May is in a frantic search for the ideal compromise.
While promising "further discussions", he said he was concerned that empowering Parliament to "instruct" ministers what to do in the event of no deal would leave the United Kingdom in "very rocky constitutional territory".
May's officials begin work on Wednesday, drafting a new clause in her key piece of Brexit legislation after she narrowly avoided a defeat in Parliament by offering last-minute concessions to pro-EU lawmakers.
Anti-Brexit demonstrators protest opposite the Houses of Parliament in London, Britain, June 11, 2018.
British Prime Minister Theresa May faces a showdown in parliament with lawmakers later on Tuesday who want a "meaningful vote" on an eventual Brexit deal and to set the government's "direction" if the house rejects the agreement.
He also insisted he wanted to "speak up for his constituents" - even though Eurosceptics pointed out his Bracknell seat voted 53 per cent to Leave in the referendum.
But it is likely only a temporary reprieve. But many businesses fear it will mean tariffs or other barriers for British goods in Europe.
Furious Scots walk out of United Kingdom parliament over Brexit
Proceedings on the EU Withdrawal Bill last night were a democratic outrage and the Scottish Parliament must be respected. The party's Westminster leader was then followed by all other SNP MPs. "But the Prime Minister has ignored Scotland".
Asked about what had been promised, Mr Buckland, the solicitor general, said the government remained "open-minded" but he would not "blithely" commit to any changes until he had had those conversations.
Pro-EU Conservative Heidi Allen said it was inevitable "we will have to come to a customs union agreement", even if it was given another label.
A spokesman for Ms MacLean said she had never spoken to Best for Britain or attended an event held by them, describing suggestions she could resign over Brexit as "utter rubbish".
The Lords had insisted that Parliament be put in charge of negotiations if MPs did not accept the terms sealed with the European Union, effectively undermining Mrs May's position.
"Over the coming weeks and months, our preparations for what is an unwanted contingency will become increasingly clear", Brexit Minister Steve Baker tells lawmakers.
'For me, this is about the important principle of Parliamentary sovereignty'.
Around 15 to 20 Tory rebels were given a personal assurance by the Prime Minister in her Commons office just minutes before voting started on the amendment.
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The couple had shared their first kiss as a married couple on that very same balcony on their wedding day two months previously. Prince Harry reportedly responded saying "yes.", before smiling and adding, "When you get into it, I'll tell you more later".
Two days of debate on the laws that will end Britain's European Union membership have crystallised long-running divisions within May's party about the best strategy for leaving the European Union, bringing to a head issues that will determine the relationship between the world's fifth-largest economy and its biggest trading bloc.
The rebellions highlight the divisions over Brexit that plague both leading parties, and the lack of effective party discipline as politicians prioritise what they see as the national interest.
Ahead of the crucial votes on the EU Withdrawal Bill, Brexit Secretary David Davis warned MPs that defeat would undermine the UK's negotiating stance in Brussels.
A paper laying out the U.K. government position on future relations, due to be published this month, has been delayed until July because the Cabinet can not agree on a united stance.
"The Government's amendment today provides for a meaningful vote".
Earlier, tensions over the bill's provisions on devolution boiled over when SNP MPs walked out of the Commons after their leader Ian Blackford was ejected.
"Scotland's voice has not been heard", said Blackford, who was expelled from the chamber for repeatedly challenging the Speaker on the issue, sparking a walkout by his colleagues.
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It is a similar story for neighbours United, who begin at home to Leicester. Absolutely, it is the game before the season starts.
But, to the disappointment of some of pro-European MPs, Downing Street rejected a second plan that would allow parliament to step in if no deal were reached by February.