As millions of Britons heeded a call by right-wing politicians to leave the European Union, other right-wing and far-right parties across the continent have jumped on the victory for a Brexit.
Here are some reactions:
Marine Le Pen, head of the aggressively anti-immigration, far-right National Front in France, tweeted : "Victory for freedom! As I have asked for years, it's now necessary that France and all EU countries have a referendum."
The Dutch right-wing, anti-Islam politician Geert Wilders , called on the Netherlands to hold a referendum on whether to leave the EU.
Czech Prime Minister Bohuslav Sobotka said said the EU should agree to Britain's leaving "quickly and rationally". He added that the "European project needs much stronger support of its citizens".
Manfred Weber, leader of the European People's Party, the largest bloc in the EU parliament, said Britain should expect no free ride as it negotiates its departure.
"There cannot be any special treatment for the United Kingdom. The British people have expressed their wish to leave the EU. Leave means leave. The times of cherry-picking are over."
He insisted that the exit negotiations "should be concluded within two years".
Jean-Claude Juncker , the European Commission chief, said the EU will "not be bending over backwards" to help Britain in renegotiating trade deals with countries under the EU’s umbrella.
Taro Aso, Japan's minister of finance, told an emergency press briefing that Tokyo was "extremely worried" about the risks to the global economy and markets, but stood ready to respond "firmly".
German Foreign Minister Frank-Walter Steinmeier warned earlier this month that a British departure would be a shock requiring quick action to avert the "disintegration" of the bloc.
"It looks like a sad day for #Europe + the United Kingdom," he wrote on Twitter on Friday.
European Parliament President Martin Schulz said on Friday that he expects negotiations over Britain's departure from the European Union to begin quickly.
"The United Kingdom has decided to go its own way. I think the economic data show this morning that it will be a very difficult way," Schulz told German television station ZDF.
"I expect that the negotiations on the exit will now begin quickly," said Schulz, who noted a fall in the pound after the referendum result and added: "I don't want the euro to experience something similar."
Schultz said the UK's relationship with the EU had been ambiguous but that "now it's clear".
Britain has up to two years to negotiate an exit, but EU officials have been insisting on quick and potentially tough negotiations to discourage the 27 other countries in the bloc from wanting to leave.
