Senior defence sources have warned that Britain risks becoming a 'sitting duck' to drone and missile attacks because large wind farms could interfere with radar systems needed for a modern air defence shield. Ministers have been told the country lacks an equivalent to Israel's Iron Dome, which can intercept short range rockets and ballistic missiles, and that existing radar could be disrupted by turbine blades reflecting electromagnetic signals.

Military chiefs are said to have requested around £10 billion to develop an integrated air and missile defence system, but so far only £1 billion has been allocated to explore options. Germany is investing heavily in its own missile shield as part of a wider European effort, prompting concern that Britain is falling behind in response to the growing threat from Russian and Iranian made drones.

One source claimed the expansion of onshore and offshore wind, championed by Energy Secretary Ed Miliband as part of clean power targets, presents a major obstacle because turbines can create false radar returns and background interference. The Royal Air Force has reportedly raised concerns that multiple wind farm sites could complicate tracking incoming threats.

Government officials said wind energy projects must avoid disrupting aviation and defence surveillance and insisted they are investing in radar improvements and technical solutions to limit any impact. However, critics argue that without significant new funding and clearer priorities, major cities could remain vulnerable to missile or drone strikes.