London —

From the steel-lined walls to a multi-tiered biometric security system, the complex measures that go into protecting one building in London’s West End district feel on par with the kind that feature in Spike Lee’s crime thriller movie “Inside Man,” or the comedy heist film “Now You See Me,” starring Jesse Eisenberg and Mark Ruffalo. Except, there’ll be no successful break-ins here. Located in a historical former mansion next to the high-end Dorchester Hotel, this is one of the most secure private vaults in Europe, if not the world.

The entrance to the building is always locked, and at least one officer guards the stairway down to the safes, where advanced securities are in place, including a fingerprint and iris scanner and an electronic key card reader. All three identifiers

See Full Page