St Mark's Church Mayfair W1K Timeline News and progress updates from St Mark's Church new development in Mayfair W1K Post a new milestone Grosvenor Britain & Ireland has completed the £5 million restoration of the Grade I listed St. Mark’s building in Mayfair. Built in 1822, St Mark’s was listed as... 01/05/2018 by Buildington Arup and Grosvenor have unveiled an innovative new ‘living wall’ which has the potential to reduce air pollution by up to 20%. The structure is being trialed in... 02/11/2016 by Buildington New in Buildington! 19/10/2011 by Buildington