The W1 London Marylebone W1U Timeline News and progress updates from The W1 London new development in Marylebone W1U Post a new milestone The new shop at 35 Marylebone High Street is available to let. 20/11/2018 by Buildington The W1 London residential development in Marylebone, London W1 - new on Buildington! According to Homes & Property, the prices at the development by insurance tycoon... 11/05/2017 by Buildington