I finished my PhD in 1992 at the University of Edinburgh. I was then postdoctoral researcher at Northwestern University (1992-93) and the University of Chicago(1993-97). In 1997, I became an assistant professor of Physics at Carnegie Mellon University, and an associate professor in 2001. In 2004, I returned to the UK as at Marie Curie Professor at the University of Portsmouth. I became co-director of the Institute of Cosmology and Gravitation in 2010. Since 2018, I have been Pro Vice-Chancellor (Research and Innovation).
My main research interests and projects include: Studies of the large-scale structure in the Universe (Euclid, SDSS-III BOSS); Supernovae (DES, LSST); Galaxy properties as a function of environment (Galaxy Zoo); Data science (DISCnet).