The Prime Minister's meeting with the wartime leader comes a day before Donald Trump is set to hold face-to-face discussions with his Russian counterpart Vladimir Putin this week.

The Prime Minister is set to join other European leaders for a videoconference with Mr Trump and US Vice-President JD Vance on Wednesday.

The call on Wednesday will include Sir Keir, Volodymyr Zelensky, Emmanuel Macron and Friedrich Merz, who will later be joined by the US President.