1. EaStCHEM School of Chemistry, University of St Andrews, Purdie Building, North Haugh, St Andrews KY16 9ST, U.K.
2. Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, U.K.
3. ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, U.K.
4. Johnson Matthey Technology Centre, Chilton, P.O. Box 1, Belasis Avenue, Billingham TS23 1LB, U.K.