In a remarkable turn of events, London-based AI start-up PhysicsX has secured $135 million in funding, bringing its valuation close to $1 billion. This surge in interest highlights a broader trend in the defence technology sector, where geopolitical tensions are driving nations to ramp up military spending and innovation. Founded by former Formula 1 engineers, PhysicsX is leveraging AI to enhance product design in critical industries such as manufacturing and defence, including components for engines and drones.