The Codebreaker Alan Turing Lost His Buried Treasure

In 1940 Alan Turing converted all of his life savings into two bars of silver. He buried them both under the forest floor, one under a bridge by a stream. Five years later he returned with a metal detector and couldn't find them. Someone had knocked down the bridge where he put it near the bed of the stream. And so unless someone has found it and not told anyone about it, Alan Turing's silver horde is still buried somewhere in Shenley.