Ukrainian soldiers in camouflage uniforms and helmets participate in a training exercise amid green smoke in a wooded area
Ukrainian soldiers take part in a training exercise operated by Britain’s armed forces © Justin Tallis/AFP via Getty Images

A British soldier has died in Ukraine after a “tragic accident” while observing a test of new defensive equipment, the UK’s Ministry of Defence said on Tuesday, in the first death of a UK soldier in the war.

An MoD spokesperson said the death was not believed to have been caused by hostile fire, and the soldier had been injured “whilst observing Ukrainian forces test a new defensive capability, away from the front lines”. The serviceman, whose name has not been released, died on Tuesday morning. His family has been informed.

The MoD said no further details would be released at this stage. Ukraine’s defence ministry did not immediately respond to a request for comment.

The UK has previously acknowledged that a small number of British personnel are present in Ukraine, primarily to provide security for the British diplomatic mission and to support the training and development of the Ukrainian Armed Forces.

Their deployment is not related to direct combat operations, and the UK has consistently stated that it has no troops fighting on the front line.

But many UK citizens have arrived in Ukraine to join the country’s fight against Russia’s invasion, with at least 15 killed since 2022, according to news reports and publicly available information. Several have signed military contracts with the Ukrainian armed forces following calls from President Volodymyr Zelenskyy in 2022 for foreigners with military experience to help his army defend against Moscow’s full-scale war.

In July, UK defence secretary John Healey told parliament that UK personnel were in Ukraine to scout new security arrangements to support Ukraine in the event of a ceasefire. He said planning included “reconnaissance in Ukraine, led by UK personnel”. 

The circumstances of the accident remain unclear, including what was being tested and how the soldier came to be fatally injured. Ukrainian forces have been trialling a range of new defensive technologies — from counter-drone systems to new long-range missiles — as they continue to adapt to evolving battlefield threats.

The death is expected to raise fresh questions about the role of Western military advisers in Ukraine, though officials emphasised that the soldier was operating far from active combat zones.

UK Prime Minister Sir Keir Starmer said in a post on X: “My deepest sympathy and condolences to the family of the member of our Armed Forces who sadly lost their life today. Their service and sacrifice will never be forgotten.”

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