Theresa MayPrime Minister Theresa May is under pressure to drop Hard Brexit plans. Leon Neal / Getty
  • Brexit negotiations begin on Monday morning.
  • Brexit secretary David Davis will meet with the EU's chief negotiator Michel Barnier in Brussels.
  • Leading business groups call on prime minister Theresa May to drop "Hard Brexit" plans.
  • Poll finds majority support for a softer Brexit.
  • The Chancellor says no deal would be "very, very, bad" for Britain.
  • PM has yet to secure a hung parliament deal with the DUP.
  • Cabinet in "civil war" over May's Brexit plans.
  • May faces possible leadership challenge as poll puts Labour three points ahead.
  • Davis says negotiations begin with "positive and constructive tone"
LONDON — Brexit negotiations will begin on Monday morning despite a widening Cabinet rift over Britain's negotiating aims and growing doubts about the future of prime minister Theresa May.
Brexit Minister David Davis will this morning meet with chief EU negotiator Michel Barnier in Brussels for the first day of what he described as "historic" talks that will set Britain on the road to leaving the EU.
"Today marks the start of negotiations that will shape the future of the European Union and the United Kingdom, and the lives of our citizens," he is expected to say.
David DavisBrexit Minister David Davis. REUTERS/Neil Hall
"While there is a long road ahead, our destination is clear — a deep and special partnership between the UK and the EU. A deal like no other in history."
The early stages of the talks are expected to focus on Britain's 'divorce' from the EU, the future of EU citizens living in the UK, and the Northern Ireland border. Talks on Britain's future relationship with the bloc are to be held back until later in the year.
At a press conference held before negotiations begin, Davis said "we are starting this negotiation in a positive and constructive tone."
Responding to Barnier's call to "tackle the uncertainties caused by Brexit," Davis said that "there is more that unites us than divides us," between the UK and its "closest allies in Europe."
The negotiations begin despite May yet failing to have agreed a deal with the DUP to support her government's Queen's Speech next week. It also comes as May faces open criticism from senior Cabinet members about her failed election campaign and growing pressure to drop her plans for a "Hard Brexit," which would see Britain leave the EU Single Market and Customs Union.
Both Davis and May remain committed to plans to crash out of the EU if no deal is secured in two years, saying that "no deal is better than a bad deal."
May's foreign secretary Boris Johnson has insisted previously that such an outcome would be "perfectly ok."
However, five leading Business groups have sent an open letter to the government pleading with it to soften its approach and "put the economy first" in talks.
The letter from the British Chambers of Commerce, Confederation of British Industry, EEF, Federation of Small Businesses, and Institute of Directors, calls on the government to accept continued membership of the Single Market and Customs union until any new trade deal is signed and implemented — a process that trade  experts suggest could take up to a decade.
A poll on Sunday also found majority support for a softer form of Brexit. Survation found that a majority of voters back staying in the Customs Union and holding a second referendum on the final deal May secures with the EU.

Hammond attacks Mayphilip hammond theresa mayConservative party leader Theresa May and Chancellor Philip HammondStefan Rousseau/PA Wire/PA Images

May reportedly faces "civil war" inside her Cabinet, over whether she should continue with her hardline position on Brexit. Senior members are believed to want May to ditch her pre-election negotiating stance. However, other senior figures have threatened to force a vote of no confidence in her leadership if the plans are watered down.
May's chancellor Philip Hammond became the first  distanced himself from May's hardline position yesterday, saying that crashing out of the EU without a deal would be "very, very bad" for Britain.
In a scathing attack on May's failed election campaign, Hammond also told the Andrew Marr Show that he had been prevented from selling the government's record on the economy.
"It was a mistake for the campaign not to focus more on an area where we have a great story to tell — our record on the economy,” he said. “I think it was a mistake that we didn’t spend more time and resources taking apart Jeremy Corbyn’s economic proposals and his spending plans, which are frankly incredible and would do enormous damage to this country, to our jobs, to our economy. I think that was a mistake."
May has been told she has just over a week to recover her position, or face a leadership challenge, according to a report in the Sunday Times. 

Labour ahead in new poll

It comes as a new poll puts Labour three points ahead of the Conservatives. According to the Survation poll, Labour has 44% of the public's support, ahead of the Conservatives on 41%.
Survation Poll
  • Labour: 44% (+4)*
  • Conservatives: 41% (-1)
  • Liberal Democrats 6% (n/c)
  • UKIP 2% (-1)
*Changes with 2017 general election.