By Olena Harmash KYIV (Reuters) -British Prime Minister Keir Starmer said on Thursday he would give Ukraine the support it needed to put it in the strongest position to fight Russia in 2025, saying before talks in Kyiv with President Volodymyr Zelenskiy: "We mustn't let up".

The prime minister was speaking to Sky News's political editor Beth Rigby while on a surprise visit to Ukraine on Thursday.

Keir Starmer will meet President Volodymyr Zelensky for talks on strengthening the bond between the UK and Ukraine in the face of Russia’s brutal onslaught

Arriving on Thursday morning, he accompanied Ukrainian President Volodymyr Zelensky to lay flowers at a wall of remembrance for those killed in the war with Russia - telling reporters the UK will "never let up" on giving the necessary support to Ukraine.

The Kremlin has dismissed previous Western claims that Russia sponsored acts of sabotage and attacks in Europe

British Prime Minister Keir Starmer has arrived in Ukraine’s capital with a pledge to help guarantee the country’s security for a century, days before Donald Trump is to be sworn in as U.S. president

Sir Keir Starmer has vowed to put Ukraine in the "strongest possible position" this year during his first trip to Kyiv as Prime Minister. The Labour leader’s visit to the presidential palace in the capital coincided with a drone attack by Vladimir Putin ’s forces on the city.

UK Prime Minister Keir Starmer and Ukraine's President Zelenskyy sign a landmark 100-year partnership agreement to bolster defence and security.

Keir Starmer will travel to Ukraine in the coming weeks to discuss the possibility of deploying an international peacekeeping force there after the conflict with Russia has ended, his first visit to the war-torn nation since becoming UK prime minister half a year ago.

British Prime Minister Keir Starmer concluded a "landmark 100-year" security and economic partnership with Ukrainian President Volodymyr Zelensky on his first visit to the country since becoming U.K.