Fraser Bond are the leading lettings and property management agents for The Turing Building - London E20. The Turing Building is an office building within the International Quarter London development in Stratford, London e15. 350,000 sq ft of office space across 22 floors. Typical upper floors are 18,500 sq ft. BREEAM Outstanding and EPC A energy rating. Named after Alan Turing (1912–1954), the Mathematician and scientist who is widely regarded as the father of computing science and artificial intelligence. Also known as the S4 building. International Quarter London (IQL) is a new commercial,.