Westminster's notoriously awkward planning committee has given the thumbs up to the 6,500m 2scheme on a very tight site.
The project, which also faced height restrictions imposed by the council, responds to the brief of the client, Derwent Valley, by presenting an unusual facade.
The facade will use a mix of textures - including concrete, glass and timber - in an informal grid over the height of the seven storeys. The structural perimeter columns will be clad in zinc, forming a staggered pattern from floor to floor.
The project is expected to start on site in early 2006 with completion scheduled for 2007.