My primary research interests are in the field of close binary stars, in which at least one stellar component is a white dwarf, neutron star or black hole.

This work has led me and my collaborators to develop a series of high-speed cameras, ULTRACAM, ULTRASPEC and HiPERCAM, as well as a robotic telescope on La Palma, pt5m.

I am also interested in observing gravitational-wave sources in the Universe discovered by the LIGO Scientific Collaboration, most likely emitted by close binary stars.

My effort in this area is currently focused on the construction of GOTO, a wide-field survey telescope on La Palma that will search for electromagnetic counterparts to gravitational-wave transients.