The former Royal Mail building at 160 Old Street, London has been transformed into a contemporary office building, attracting a major new occupier which has taken 116,500 sq ft. The Great Ropemaker Partnership, a 50:50 joint venture partnership between Great Portland Estates plc and Ropemaker Properties Ltd worked with Orms to add space in multiple locations around the site, making the most of the existing structural frame and creating a 65% increase in usable space.The external architecture responds to three different urban scales. Subtle detailing of the white and dark brickwork panels creates a fusion of vertical and horizontal elements. This unites the three separate buildings into a coherent composition.