Boris Johnson has signed the Brexit withdrawal agreement in Downing Street, BBC reports.
The prime minister hailed a "fantastic moment" for the country after he put his name to the historic agreement, which paves the way for the UK's exit from the European Union next Friday. He said he hoped it would "bring to an end far too many years of argument and division".
Earlier on Friday, European leaders signed the document in Brussels, before it was transported to London by train.
The signings mark another step in the ratification process, following Parliament's approval of the Brexit bill earlier this week. The European Parliament will vote on the agreement on 29 January.
Downing Street officials said the PM marked the document with a Parker fountain pen, as is traditional for ceremonial signings in No 10. It was witnessed by EU and Foreign Office officials, including the PM's Chief Negotiator David Frost, and Downing Street staff.
"The signing is a fantastic moment, which finally delivers the result of the 2016 referendum and brings to an end far too many years of argument and division," Mr Johnson said. "We can now move forward as one country - with a government focused upon delivering better public services, greater opportunity and unleashing the potential of every corner of our brilliant UK, while building a strong new relationship with the EU as friends and sovereign equals."
