The Baker Street robbery was a robbery of the safe deposit boxes at 185 Lloyds Bank on the corner of Baker Street and Marylebone Road, London, on the night of 11 September 1971.
The robbers had rented a leather goods shop named Le Sac, two doors down from the bank, and tunnelled a distance of approximately 50 feet (15 m) passing under the intervening Chicken Inn restaurant. To avoid being overheard they only dug during weekends. They used a thermal lance to try to break into the vault but ultimately had to use explosives.