The bells of London’s Westminster Abbey tolled in solidarity with France, marking the moment a devastating fire started at Notre-Dame in Paris a day earlier.
British Prime Minister Theresa May said bells will ring at cathedrals and churches across England on the Thursday before Easter.
Queen Elizabeth expressed deep sadness while her son and heir Prince Charles said he was “utterly heartbroken”.
More than 400 firemen were needed to tame the inferno that consumed the roof and collapsed the spire of the gothic masterpiece.
French President Emmanuel Macron said the 12th century cathedral would be rebuilt within five years, with hundreds of millions of euros already pledged.