The UK's National Audit Office has warned the country is underprepared for a severe space weather event. This is not hyperbole. The warning comes backed by hard analysis of government planning, and it reveals a familiar and troubling gap: Britain can see the threat coming but has not decided what to do when it arrives.
The story of UK space weather preparedness is one of institutional division. The Department for Science, Innovation and Technology took on coordination of government work on severe space weather in December 2025, yet departments still lack a unified understanding of their own roles. The government is not prepared and hasn't completely thought through who will do what if the worst happens, and has yet to set out what outcome it is looking to achieve and the level of residual impacts it is willing to accept.
In 2025, the government estimated a 5-25 percent chance of a severe space weather event by 2030. That is a substantial probability for an event that could shut down swathes of national infrastructure. Yet the government does not yet understand the full range of possible impacts and cascading effects. This is not a minor forecasting uncertainty; it is a foundational knowledge gap.
The irony is pointed. Britain's forecasting capability is genuinely world-class. The Met Office, which opened a space weather monitoring centre in 2014, receives praise despite limited resources. The Met Office Space Weather Operations Centre is one of only a handful of 24/7 centres of its kind globally. Up to 96 hours' warning of a space weather event is possible, providing a window for operators to take preventive action. This is real operational value. Utilities can shut down transformers. Satellite operators can manoeuvre spacecraft. Airlines can adjust routes.
But the warning window means nothing if the receiving end of government does not know how to use it. The government has begun testing response plans but has yet to run a full simulation exercise involving local responders. Other government departments have carried out exercises, but there is no systematic learning from these. The mechanics of a whole-of-government response simply do not exist yet.
Consider what a severe solar storm could actually do. Communications could be disrupted, there might be localized power outages, satellite navigation might fail. A moderate storm from May 2024 demonstrated the threat at modest scale; it moved thousands of satellites from their orbits. The historical precedent is brutal. A solar flare on September 1, 1859, triggered a magnetic storm known as the Carrington Event, one of the largest on record; telegraph machines reportedly shocked operators and caused small fires. Translate that to modern infrastructure: an event of comparable scale today would threaten electricity networks, GPS systems, and telecommunications simultaneously. Estimates put the potential economic cost at billions of pounds.
The resource constraints are real. The Department for Science, Innovation and Technology spent around £6.7m in 2025-26 on the Met Office Space Weather Operations Centre. The UK has also committed substantial sums to Europe's efforts: the government has invested more than £300 million in Vigil, an ESA satellite mission that will deliver faster and more accurate space weather warnings. Yet this mission is expected to launch in 2031 with an operational life of five years, leaving a significant gap. The UK does not have any of its own space weather satellites and must make do with data from partners such as the United States Space Weather Prediction Center.
The NAO's recommendations are pragmatic and staged. The Department of Science, Innovation and Technology should develop a plan to test scenarios by September 2026 and add details for a whole-of-society approach by March 2027. These are not burdensome timelines. They assume government can think through these questions fairly quickly.
The government's response suggests it accepts the basic argument. A government spokesperson said the UK is better prepared than ever before, backed by world-class monitoring from the Met Office Space Weather Operations Centre. That is technically true but strategically incomplete. Forecasting excellence without response readiness is a sophisticated early warning system for a problem you cannot solve. Britain has built part of the solution. The harder part—deciding what to do with 96 hours' notice before critical systems fail—remains undone.