British Prime Minister Boris Johnson will hold talks with European leaders on the sidelines of the UN General Assembly (UNGA) in New York next week as part of his push to secure a Brexit deal by the end of October.

Axar.az reports citing foreign media that Johnson is due to meet Irish Prime Minister Leo Varadkar, European Council President Donald Tusk, French President Emmanuel Macron, and Germany's Angela Merkel on Monday and Tuesday, a senior UK official said.

"What this gives the Prime Minister an opportunity to do is talk to them at leader level about what some of our proposals are," the official said.

"We are under no illusions that there is an awful lot of work still to do, and you should view the discussions at UNGA as part of an ongoing process."

Johnson has promised to take Britain out of the European Union on October 31, with or without a deal, and is seeking changes to the agreement his predecessor Theresa May reached with Brussels.