In line with the ethos of the Cooperative Group, their headquarters at One Angel Square in Manchester, United Kingdom, is one of the most energy efficient buildings in Europe, rated BREEAM 'Outstanding', and having achieved a world-record BREEAM score of 95.32% - the highest scoring building in the world at the time of completion. The building is also an energy-plus building, producing surplus energy and zero carbon emissions. All of which is enabled by the envelope, designed and built by Waagner Biro Steel and Glass. The building architecture of the building is built to resemble a beehive, for over 3,000 employees, and is arranged based on the angle of incidence. The Coop Group has been headquartered in Manchester for over 150 years, and this new headquarters building was the spearhead of a wider urban revitalisation project for the entire area. 15 stories of double skin façade, by Waagner Biro Steel and Glass, in addition to the tiered diagrid roof, covering the naturally lit atrium are of crucial importance to the sustainable energy strategy of the building. Waagner Biro Steel and Glass leaned on its extensive façade and steel construction expertise in the design and construction of this challenging project. The double skin façade, comprised of aluminium unitised curtain wall elements posed a particular challenge due to its complexity and the use of adapted, bespoke extruded profiles, based on the manufacturers standard profile catalogue developed specifically for this project. Along with The Crystal, in London, Waagner Biro Steel and Glass are proud of their contribution to world-leading sustainable buildings which provide benchmark for a much-needed future of sustainable and energy-positive buildings.