55 Grosvenor Street W1K Timeline News and progress updates from 55 Grosvenor Street new development in W1K Post a new milestone Permission granted for: Use of part of the ground floor as retail accommodation (Class A1) in association with the existing retail units at 14-26 Davies Street.... 05/03/2013 by Buildington Planning permission sought for: Display of non-illuminated estate agent board measuring 600mm x 450mm to be attached to the ground floor railings for a temporary... 24/07/2012 by Buildington