BRUSSELS - The attendance of the United Kingdom (UK) at a European Union (EU) council meeting marks a "reset" in their relationship, British Foreign Secretary David Lammy said on Monday in Luxembourg.

"Today is a historic moment that marks our EU reset. Delighted to talk to 27 member states and their foreign ministers about important issues of European security. The UK and Europe's security is indivisible," said Lammy who attended the EU Foreign Affairs Council meeting in Luxembourg.

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Lammy has become the first British foreign secretary since Brexit to attend a regular meeting of EU foreign ministers, "as part of Labour's 'reset' with Europe," according to British media reports.

"With the ambition for the EU and the UK to become closer security partners, we need to strengthen our cooperation across the full range of foreign and security challenges we face as a continent," said Lammy and top EU diplomat Josep Borrell in a joint article published on Monday.

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Borrell said conflicts in Ukraine and the Middle East will be the main subjects of discussion at Monday's Foreign Affairs Council meeting.