The UK government plans to run what it describes as the biggest home defence exercise in decades next year, according to reports from Yahoo UK and Sky News. The exercise is intended to strengthen national preparedness in the event of war. While details of the scenario, size, and participating bodies are not provided in the information published by the two outlets, both accounts describe the move as a large-scale effort focused on testing and improving how the country responds to a potential conflict situation.
Both sources frame the exercise as a step toward better readiness, suggesting it will involve planning and coordination across relevant parts of government and possibly wider organisations responsible for civil contingencies. The reporting is consistent in characterising the exercise as unprecedented in scale for recent years and motivated by the need to prepare for the possibility of war. No additional confirmed information is included in the provided excerpts about timelines beyond “next year,” or about specific outcomes the exercise is designed to measure.