160 Old Street, London


Structural Engineer
Heyne Tillett Steel

Steelwork Contractor
Bourne Steel Ltd

Main Contractor
Wates Construction

Great Portland Estates plc

160 Old Street is a project which does more with less in every respect. The conversion a 1970s-built office building into a modern commercial scheme fit for the 21st Century involved the addition of 3 floors, infilling lightwells and extending all elevations to significantly increase the lettable floor area.

Using a lightweight steel composite solution to form the new upper floors, and internal zone, minimised the load increase on the existing frame and foundations.

Exposed soffits throughout create an attractive modern industrial warehouse environment. The building has been widely applauded as a thoughtful, intelligent, sustainable and efficient re-modelling of an existing site.

Judges’ comment

Lightweight steel solutions have maximised the value of this mid-20th Century commercial building with additions of up to three new storeys. The team devised creative framing details for extension of the floorplates integrated with the new façade systems. The designers actively engaged with academic experts to develop details and ensure the vibration performance of new lightweight floors.