Ukrainian President Volodymyr Zelensky made a surprise visit to the UK in a bid to secure more military support to counter potential Russian aggression.
He was greeted at London Stansted airport by UK Prime Minister Rishi Sunak, who announced plans to expand military support to include training Ukrainian pilots in NATO fighter jets.
Zelensky is scheduled to address Parliament and meet King Charles III at Buckingham Palace.
The visit comes as Ukraine seeks to retake territory held by Russia's forces.
Ukrainian President Volodymyr Zelensky made a surprise visit to the UK, seeking international military support to counter potential Russian aggression.
The visit is only Zelensky's second foreign trip since the Russian invasion.
He was greeted by UK Prime Minister Rishi Sunak on the tarmac at London Stansted airport.
Sunak announced plans to expand military support for Ukraine, including training Ukrainian pilots in NATO fighter jets.
Zelensky will address Parliament during his visit and meet with King Charles III at Buckingham Palace.
UK officials state that the support for Ukraine will begin with an immediate increase in military equipment and bolstering the UK's training offer for Ukrainian troops, with the potential to include fighter jet pilots.
Downing Street made the surprise announcement of President Zelensky's visit shortly before his arrival, emphasizing the UK's support of Ukraine.
However, while Zelensky expressed gratitude for the support, he also noted that more was needed to counter potential Russian aggression.
Zelensky stated on Instagram, "The United Kingdom was one of the first to come to Ukraine's aid.
And today I'm in London to personally thank the British people for their support".