Mr Sorrell said: “Mr Macron, the new president, is probably going to take a harder line, a tougher line, in those negotiations.
“The good news is that Macron wins, the bad news is I think it is going to be a tougher negotiation for our Prime Minister.”
Asked if the “world would leave” the UK once it has left the European Union, Mr Sorrell said Britain might lose some of its supremacy as a finance hub, but not as much as feared.
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