Jonathan Clayden is a Professor of Organic Chemistry at the University of Manchester, where he and his research group work on the construction of molecules with defined shapes - in particular those where control of conformation and limitation of flexibility is important. Jonathan was awarded a BA (Natural Sciences) from Churchill College, Cambridge before completing his PhD with Stuart Warren, also at the University of Cambridge. He has been at the University of Manchester since 1994. Stuart Warren is a former lecturer in the Department of Chemistry at the University of Cambridge and Fellow of Churchill College, Cambridge. A graduate of Trinity College, Cambridge, Stuart completed his PhD at Cambridge with Malcolm Clark before carrying out post-doctoral research at Harvard University. He became a teaching fellow at Churchill College in 1971, and remained a lecturer and researcher at Cambridge until his retirement in 2006.