Every uncrewed vehicle that IDV builds, from a small four-wheeled robot through to a converted 40-tonne Terrier, runs the same British-written software, and at the heart of that software sits an unusual capability that the UK Defence Journal was able to watch in action at the company’s proving ground at MIRA in Nuneaton, a patented navigation system that lets the vehicle find its way with no satellite signal at all. The wider system, which the c…