The Baker Street robbery occurred on September 26, 1971, in London, England. A group of criminals broke into a safe deposit company located on Baker Street, stealing approximately £3 million in cash and valuables. The heist was meticulously planned, involving the use of a tunnel that connected to the building. The robbery was notable for its scale and execution, as the thieves spent several weeks preparing. They used a variety of tools to access the vault, and the crime was not discovered until the following day. Despite extensive investigations, many of the stolen items were never recovered.