Markus Schomer, chief economist at PineBridge Investments, said a big win for the Conservative party in Thursday’s election would have “no impact” on Mrs May's negotiation hand with the Brussels bloc.
He said: “The outcome of the election may actually weaken her somewhat internally if she doesn’t come up with this big lead in parliament and I don’t think it will have much implications for the negotiations anyway.
“She may get a mandate but everybody has a mandate in Europe as well and the EU holds all the cards in the negotiations.
Markus Schomer said the EU held "all the cards" in the upcoming Brexit talks
The EU holds all the cards in the negotiations
“They determine what kind of access the UK will have to the single market.
“Therefore it’s good internally for Theresa May potentially but it won’t have any impact on the strength of her negotiation hand with the EU.”
Senior civil servants have been told to prepare plans for a hung parliament before the end of the week as a growing amount of experts predict Mrs May will not secure a House of Commons majority.
Whitehall officials told The Times two weeks ago that only minor preparations had been made for scenarios which did not involve the Tories winning a majority on Thursday.
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Jeremy Corbyn during a visit to Hackney Marshes Football Pitches, to highlight Labour's manifesto commitment to ensure 5% of the Premier League's television rights income is diverted to the grassroots game, during a General Election campaign
After a series of polls suggested Labour’s recent boost in support could threaten the Prime Minister’s hopes of a Commons majority, the result of General Election has been plunged into uncertainty.
According to the Times, one Whitehall source said: “A senior civil servant sat in a meeting and said, ‘We’ve just all been told to prepare our plan for a hung parliament.’ This goes further than before.”
Sources have reportedly told the newspaper that Labour frontbenchers have increased their communications with senior Whitehall officials in recent days.