1 Great St Helen's City EC3A Timeline News and progress updates from 1 Great St Helen's new development in City EC3A Post a new milestone OD Interiors at 1 Great St Helens We have posted new photos of 1 Great St Helen’s site in the City of London EC3.OD Interiors is currently on site with fit-out works due to complete in Q2 2023.See... 08/11/2023 by Buildington