Contributor(s): Sir David Chipperfield | In this lecture renowned British architect David Chipperfield will discuss the current state of planning in London and the importance of finding a balance between development and conservation. Sir David Chipperfield is a British architect who established the global architectural practice David Chipperfield Architects in 1985. Rowan Moore (@RowanMoore) is Architecture Critic of The Observer. His new book, Slow Burn City, explores the unprecedented transformations of London in the 21st century. Ricky Burdett (@BURDETTR) is Professor of Urban Studies, and Director of LSE Cities and the Urban Age Programme at the London School of Economics and Political Science. LSE Cities (@LSECities) is an international centre at the London School of Economics and Political Science that carries out research, conferences, education and outreach activities in London and abroad. Its mission is to study how people and cities interact in a rapidly urbanising world, focussing on how the design of cities impacts on society, culture and the environment.