Key developments

:: Kantar exit poll indicates Emmanuel Macron has won French presidency with 65.5% of the vote

:: Marine Le Pen concedes defeat in speech and says the National Front is now Mr Macron's main opposition

:: British Prime Minister Theresa May has congratulated Mr Macron in a statement, as has German Chancellor Angela Merkel

:: Mr Macron is holding an event to celebrate his victory at the Louvre in the centre of Paris