On Ukraine’s Independence Day, British Prime Minister Andy Burnham stood alongside other global leaders in Kyiv to make a landmark announcement: the United Kingdom will share classified technical data for British-made missile components to help Ukraine establish domestic production of long-range precision weapons.
Under the new plan, leading European defense contractor MBDA will release detailed specifications for the British-built parts of the SCALP cruise missile, clearing the way for Ukrainian engineers to assemble the weapons domestically. The SCALP missile, developed jointly by France and the United Kingdom, is the French-named variant of the UK’s well-known Storm Shadow air-launched cruise missile.
Both variants share the same core design, boasting an official range of more than 250 kilometers (155 miles). Standing 5.1 meters (16.7 feet) long, the low-observable missile is engineered to strike fixed, hardened targets such as reinforced bunkers, command centers and critical military infrastructure. MBDA confirms the weapon relies on an advanced multi-mode navigation system that delivers exceptional hit accuracy. Currently, Storm Shadow and SCALP missiles are in active service with the air forces of the UK, France, Italy and several other operator nations, and have seen combat use in past conflicts in Iraq, Libya and Syria.
The UK’s announcement complements ongoing negotiations between Kyiv and Paris to build local SCALP assembly lines inside Ukraine. While the end goal of full domestic production would give Ukraine a sustainable, independent supply of long-range strike capability, details on the progress of construction and production timelines remain undisclosed. Experts warn that the ultimate impact of this new policy will depend heavily on how quickly Ukraine can scale up domestic manufacturing and bring domestically assembled missiles into frontline service.
Douglas Barrie, senior fellow at the International Institute for Strategic Studies, noted that the decision to declassify and share sensitive technical specifications is a significant step forward for UK support, but tangible battlefield benefits will not materialize immediately. “Any impact … will in part depend on how quickly Ukrainian-assembled SCALP cruise missiles can be introduced into service,” Barrie explained.
The announcement also comes amid an urgent short-term gap in Ukraine’s air defense capabilities: Ukrainian President Volodymyr Zelenskyy confirmed Sunday that the supply of Patriot interceptor missiles, critical for blocking Russian ballistic missile and airstrikes, has dropped sharply even as Russian attacks intensify. Production backlogs across the United States and allied European nations have slowed output, leaving Kyiv scrambling to shore up its air defense networks.
Moscow has already pushed back sharply against the UK’s new policy. Kremlin spokesperson Dmitry Peskov accused Britain of “fanning the flame” of the ongoing conflict, a rejection Burnham dismissed outright during a press briefing in Kyiv. When asked about Peskov’s criticism, the prime minister fired back: “Who started the fire?”
This latest announcement builds on the UK’s longstanding support for Ukraine’s long-range strike capacity. In 2023, Britain became the first Western nation to supply Kyiv with pre-built Storm Shadow missiles, which immediately allowed Ukraine to strike Russian command hubs, supply depots and logistical lines deep behind front lines, including in Russian-occupied Crimea. Beyond supporting SCALP production, the UK is also partnering with British defense firms to help Ukraine develop an affordable new ground-launched strike system, with testing already underway. That system is designed to hit targets out to 500 kilometers (310 miles) while carrying a 225-kilogram (496-pound) warhead, expanding Ukraine’s future strike capabilities even further.