🇬🇧Britain gave America🇺🇸 the most valuable cargo ever to cross the Atlantic. In a suitcase. U-boats were strangling Britain. Hundreds of ships sunk. We couldn't find them. Then two men in Birmingham solved it. John Randall. A gardener's son from Lancashire. Harry Boot. A PhD student. Twenty-two years old. They built it from scraps. A copper block. A bell jar. The biggest horseshoe magnet they could find. The “CAVITY MAGNETRON”. Made radar small enough to fit in a plane. Britain sent it to America. No payment. No strings. The war turned. Randall and Boot were paid fifty pounds each. "For improving the safety of life at sea." A gardener's son. A student. A copper block and a horseshoe magnet. That's all it took to change the world. Two ordinary Brits. Working together. Be part of us: proudofus.co.uk Be proud of us. 🇬🇧