A member of the British armed forces died in Ukraine on Tuesday while observing Ukrainian forces test a new defensive capability, Britain's Ministry of Defence said, adding that the accident had occurred away from the front lines.

Britain has been among Ukraine's most outspoken supporters, supplying weapons to Kyiv and training some of its soldiers.

Last month, Britain said it was still making plans as a leading nation in the so-called 'Coalition of the Willing' backing Kyiv for a multinational force in Ukraine after a ceasefire is agreed, despite stiff opposition from Russia.

Ukrainian servicemen of the 88th Separate Marine Battalion of the 35th Separate Marine Brigade use an RPG-7 grenade launcher during military exercises at a training ground, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine February 24, 2025.
Ukrainian servicemen of the 88th Separate Marine Battalion of the 35th Separate Marine Brigade use an RPG-7 grenade launcher during military exercises at a training ground, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine February 24, 2025. (credit: REUTERS/VALENTYN OGIRENKO)

UK officials mourn the devastating accident

"Devastated by the death of a UK service personnel in Ukraine," said Defense Minister John Healey. "My thoughts are with their family, friends, and colleagues as they grieve for a loved one. Our hearts go out to them."

Prime Minister Keir Starmer also offered his condolences, saying, "their service and sacrifice will never be forgotten."

The British government has never confirmed how many service personnel are in Ukraine, but the BBC has reported that a small contingent is supporting Ukrainian forces and is providing security to diplomatic staff.