The 'Complexity Complex' was established in 2005 with the goal of catalyzing cross-disciplinary research in Complexity Science. It built on an ESRC-supported seminar series on 'Socio-economic dynamics', and two EC network projects co-ordinated from Warwick ('Unifying networks in science and society' and 'Complex financial markets') and the work of a number of research groups such as: The Centre for Fusion, Space & Astrophysics; Information Systems Research Unit; Centre for Primary Health Care Studies; and Systems Biology.