70 St Mary Axe

  • London

  • 2019

  • Contractor Mace

  • Photos: Sokari Higgwe

Office Building

The development of 70 St. Mary Axe will create a stunning, semi-elliptical property, with c.28,000 sq m (300,000 sq ft) of net office space over 19 floors, arranged above a double-height foyer on the ground floor.
Sustainability is high on the agenda with the scheme providing a stunning geometry and also a highly efficient building BREEAM excellent.
The height and shape of the building have been developed to create a distinctive geometry in response to strategic local views. Vertical shading fins to the curved facades and glazed double wall cladding to the end elevations reduce solar heat gains to the office space. Other low energy measures, such as borehole thermal energy storage and energy piles, result in a design with very low carbon emissions.
Although not one of the highest skyscrapers in the area, is expected to become a new landmark in the City of London.


  • Flat and cold bent unitised structurally silicone glazed system

  • Toggle system with reinforced steel mullions

  • Vertical anodised aluminium fins

  • Anodised aluminium columns casing


Foggo Associates London

Peter Foggo Associates was formed in 1989 by a multi-disciplinary team of architects, engineers and quantity surveyors, who had all successfully worked together for a number of years. The team was responsible for a number of distinguished and award winning projects (through the 1970s to 1990s) at Arup Associates, where Peter Foggo (1930 to 1993) was both a Partner and a Director. These projects were notable not only for their architectural quality but also for innovations such as pioneering use of the management contract at the Horizon factory, Nottingham and low energy office design at the Gateway Buildings, Basingstoke. The Finsbury Avenue and Broadgate developments in the City of London cemented the team's reputation for high quality commercial architecture built on time and to budget to fast track programmes. Competition wins for the Brno Technology Park in the Czech Republic and the masterplan and subsequent buildings at Leeds City Office Park enabled the practice to set new standards for low energy office design. The practice maintained and enhanced its reputation for contemporary rational commercial architecture in complex environments with projects in the City of London such as 111 Old Broad Street and 60 Queen Victoria Street. The practice's work completed to date ranges from small scale residential extensions (such as Sorrel House, RIBA Southern Region Prize 2002) to large scale urban mixed use masterplans and developments (such as Cannon Place, ICE Building of the Year 2011 and various other awards).