My research interests include the economy of the Roman Empire, ancient technology, ancient water supply and usage, Roman North Africa and archaeological field survey. I co-direct, with Alan Bowman,
the Oxford Roman Economy Project (OxREP), and, with Chris Howgego,
the Coin Hoards of the Roman Empire project. With Bob Bewley and David Kennedy, and with David Mattingly at Leicester, I am also conducting a project on Endangered Archaeology in North Africa and the Middle East, using satellite imagery to assess threats to archaeological sites.
I have excavated and studied ancient water systems in Italy, Morocco, Tunisia, Libya, Syria, and Cyprus, and am currently involved in excavations at Aphrodisias (Turkey) and Utica (Tunisia).
In 2019, I hosted Dr Ben Jerbania, a TORCH International Fellow.