Institute of Archaeology-UCL BA (1980) & PhD (1991) (Settlement and Pottery of the Vinalopo Valley (Alicante), AD 400-700), providing a detailed review of ceramics and trade in W Mediterranean ports (published as BAR 588 & 604 in 1993, 1995). Have studied-published Hellenistic, Roman and Islamic ceramics from excavations in Spain (Alicante, Cartagena, Valencia), Roman Syria (Beirut, Chhim, Homs, Basit, Zeugma), Albania (Butrint, Durres), Greece (Athens, Corinth, Thesprotia, Nicopolis, Patras), Bulgaria (Nicopolis, Dichin) and N Africa (Carthage, Utica, Leptis Magna).

Author of Trade in the Western Mediterranean AD 400-700: the ceramic evidence, BAR 604 (1995); Hispania and the Roman Mediterranean, AD 100-700: Ceramics and Trade (2010) and Butrint 6, Volume 3. The Roman and Late Antique Pottery from the Vrina Plain Excavations (2020). Co-editor of the series Roman and Late Antique Mediterranean Pottery (Archaeopress, Oxford). 

The principal aim of my research is the study of trade networks and economies of the Classical-Late Antique Mediterranean, Black Sea & Atlantic through the definition of regional ceramic typologies and analysis of the regional-long distance distribution of ceramics in major ports (table-wares, amphorae & cooking wares). I am interested in all factors that contributed to the supply of goods: private, state, city, ecclesiastical & administrative structures. Other interests include Hellenistic-Roman cuisine-cultural interaction in the Roman East; typologies and archaeometry of local ceramics in the Roman-Byzantine East; analysis of organic residues in amphorae (Spanish Ministry RACA-Med I and II projects); typologies, archaeometry, dating, function of Islamic pottery in Utica and N Africa (ongoing Barakat Trust project).