50 Berkeley Square Mayfair W1J Timeline News and progress updates from 50 Berkeley Square new development in Mayfair W1J Post a new milestone Planning permission granted for the use as a single family dwellinghouse. Decision date: 08.02.12 Ref. no.: 11/11941/FULL Planning permission granted for... 02/03/2012 by Buildington New in Buildington! 18/09/2011 by Buildington