The Aga Khan Centre, which uses 25% less regulated energy than a typical UK building of its kind, has opened in Kings Cross. Arup led on building services engineering, facade engineering design, lighting design and acoustics services for the centre. Sustainability goals were met by installing a high level passive chilled beams system to reduce energy consumption and create a quieter working environment as there are no motorised elements required. A water recycling system has been installed to collect water from wash hand basins and shower, and passes through a treatment system and is used for the irrigation of the six gardens.