🔒 Quantum communication just became real. Data encrypted by the laws of physics was transmitted over 410km between Bristol and Cambridge. No theories. No simulations. Live fibre. Full encryption. Total security. This UK trial marks the first long-distance quantum-secure video call and the integration of key distribution and entanglement on existing infrastructure. The result? A working network that detects interference instantly and resists both current and future threats. National rollout is n