Britain has left the European Union, bringing the curtain down on 47 years of membership.
Almost four years on from the 2016 referendum, the UK ceased to be a member of the bloc at 11pm on Friday.
Sky News marked the moment by projecting a Brexit countdown clock on the White Cliffs of Dover, which ended in the historic announcement, “The UK has left the EU.”
The landmark day has been marked with a mixture of celebration and regret across Britain.
In a video message released to mark Brexit, Prime Minister Boris Johnson referenced the divisions that have been caused by the Leave vote.
He said that while Brexit represented an “astonishing moment of hope” for many, there will be others who “feel a sense of anxiety and loss”.
But he predicted that the “opportunity” of Brexit can be turned into a “stunning success”.
The PM is hosting a reception in Number 10 for cabinet ministers, advisers and civil servants, officials who were involved in the negotiations, and supporters of the Leave campaign to leave.
Supporters and opponents of Brexit have been making their views known throughout Britain, with Westminster a particular focus for events.
Hundreds of Brexit supporters have gathered for a party led by Nigel Farage on Parliament Square.
A music system was set up on the back of a lorry, with people dancing to music by Sir Tom Jones and Queen.
Dozens gathered around the statue of Sir Winston Churchill, with some ringing bells and banging a drum attached to a modified cart dubbed Little Ben.
Earlier, pro-EU demonstrators took part in a procession through Whitehall.
A crowd also gathered across the road from Number 10, waving EU flags and anti-Brexit placards.
The message “we still love EU” was beamed onto the White Cliffs of Dover.
It comes after a love letter to the bloc from two Second World War veterans was projected onto the cliffs.
The video ends with the stars of the EU flag slowly disappearing, leaving just one star.
“This is our star. Look after it for us,” the last message says.
Candlelit vigils have taken place in Scotland, which voted to stay in the EU.
Leave a Light On gatherings happened in Aberdeen, Dundee, Glasgow, and Stirling, among other locations.
Participants wanted to send a message to the EU to keep open a place for Scotland, amid a renewed bid from the SNP for a second independence referendum.
In Northern Ireland, there were a series of protests in Armagh, close to the border with the Republic of Ireland.
In Brussels, the EU has been preparing for life without Britain in the bloc.
The UK flag has been removed from its flagpole outside the European Parliament – and other EU institutions – and will be placed in a museum.
The vote for Brexit caused a political earthquake, with British politics consumed by the aftershocks for years.
It ended the premierships of David Cameron, who called the referendum, and Theresa May, who saw her time in Downing Street ended by the Brexit chaos.
Mr Johnson, who led the campaign to leave the EU, managed to get a Brexit deal passed by parliament.
He gambled on a snap election and was returned to power with a commanding majority.
But although a page has been turned in the process, Britain still has to negotiate the terms of its future relationship with Brussels.