12 St James's Street SW1A Timeline News and progress updates from 12 St James's Street new development in SW1A Post a new milestone Westminster City Council has decided to grant conditional permission for: Use of the basement, ground and mezzanine of 12 St James's Street as a fitness club (Class D2)... 15/02/2017 by Buildington 12 St James's Street in St James's, London SW1 - new on Buildington! 07/03/2014 by Buildington