122 Leadenhall Street is currently under demolition (Sep 07) to make way for the new 224m tall Leadenhall Building. The building is being unusually being demolished by McGee that has created a building which seemingly hovers in mid-air. This is due to the top down construction that has a central core supporting a crown that works as a cantilever to support the floors slung under it hence the need to demolish the lowest floors and work up. It's been made even harder by the fact that this was originally a building with bank vaults with concrete walls at times over 1.5 metres thick - enough to stop even Michael Caine getting into for the gold! The building, at the stands at its original height of 54m.