- The United Kingdom officially seized to be a member of the European Union on Friday, January 31
- The exit comes after more than three years after it voted to do so in a referendum
- The UK's Prime Minister Boris Johnson vowed to bring the country together after the exit
- Brexit parties were held in pubs and social clubs across the UK as Boris and his team celebrated with English sparkling wine
The United Kingdom (UK) is officially no longer a member of the European Union (EU) after 47 years of membership.
The historic moment, which happened on the night of Friday, January 31, was marked by both celebrations and anti-Brexit protests.
The UK Prime Minister Boris Johnson. through a message shared on social media, vowed to bring the country together and take its citizens forward.
"For many people, this is an astonishing moment of hope, a moment they thought would never come. And there are many of course who feel a sense of anxiety and loss" read the message.
"And then, of course, there is a third group - perhaps the biggest - who had started to worry that the whole political wrangle would never come to an end," he added.
The prime minister also said that the EU had evolved over 50 years and that its strengths and admirable qualities no longer suited the UK.
"The most important thing to say tonight is that this is not an end but a beginning and a moment of real national renewal and change," he said.
Hundreds gathered in Parliament Square to celebrate Brexit, singing patriotic songs and cheering speeches from leading Brexiteers.
Boris marked the historic moment with his team at his Downing Street office, celebrating with English sparkling wine and an array of British culinary treats.
Anti-Brexit campaigners mounted several protests along the Irish border.
Under the terms of the withdrawal agreement between the UK and EU, Britain now enters a transition period until the end of 2020.
This means London will abide by most EU laws while their future relationship is hashed out and Boris must achieve a trade deal with the EU within 11 months.
Most experts have described the task as ambitious at best, but his wider mission over the next five years will be to find a way to repair the country's divisions.
Brexit has caused the downfall of two prime ministers. David Cameron resigned after the unexpected win for the Leave camp and his successor, Theresa May.
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