My interests include the study of island societies in Classical antiquity, early Greek religion, and the development and transformation of political identities in the Archaic to Hellenistic Greek world. My current research is focused in the Ionian islands and north-western Greece, where I direct fieldwork on Ithaca on behalf of the British School at Athens and participate in field projects on Kephallonia, Leukas, and Meganisi. I am writing a book on the Ionian islands from the Archaic period to Roman times, examining such issues as the economic and political forces operating to unite or fragment the archipelago, the impact of colonisation, and the nature of migration and its effects upon the development of political communities.
I have two further areas of interest. The first is industrial archaeology in the Greek world. I co-direct a survey of the limestone quarries at Kenchreai in the eastern Corinthia which aims to reconstruct the history and organisation of stone extraction and the impact of over a millennium of quarry activity on local settlement and supply chains. The second is the history of archaeological research in Greece, most recently involving a collaboration with colleagues in the British Museum, the Archaeological Museum of Thessaloniki, and the Musée du Louvre to investigate the archaeological activities of the Allied armies on the Salonica Front during World War 1.

My current research spans three areas: (a) the moral and political philosophy of foreign policy, which includes the ethics of war, the ethics of force short of war, and the ethics of espionage; (b) some of the philosphical issues raised by the destruction and protection of cultural heritage, particularly heritage which is deemed (rightly or wrongly) to have universal value: (c) the political philosophy of democracy, particularly the ethics of voting, and the normative foundations of the executive branch of government.

I am an international trade economist interested mainly in empirical work on policy-relevant questions. My research programme focuses on identifying the policies through which countries can use international integration to facilitate their economic growth. In my work, I have examined the determinants and consequences of inflows of foreign direct investment, the implications of services liberalization for productivity growth, and strategies multi-product firms use to compete in international markets. In my most recent research, I study the effects of globalisation on the gender wage gap and female employment.

I am a social theorist and political researcher, working primarily within the fields of political thought and the history of ideas. My primary research focus is on the study of ideologies, in particular how ideologies gain influence among the population, reflected in how public opinion is formed and expressed. Through my research, I aim to help contemporary progressive movements respond better to the rising salience of identity politics and sustainability, and the threat of authoritarianism and populist nationalism. In this vein, I am a passionate supporter of widening access and diversity in higher education to include all those discriminated against on grounds of income, gender, race, sexual orientation, or disability.

At the heart of my work lies an innovative 'social morphology' approach to ideology analysis, which synthesises insights from conceptual morphology, conceptual and intellectual history, social psychology, and structuralist and poststructuralist social theory. This approach has closely informed my work on the principled basis of cooperation between progressive ideologies, and the formulation of specific policies that can bridge current areas of acute polarisation—including a proposal for a European-level Universal Basic Income. My work draws on two historical case-studies: (1) the emergence of social democracy as an independent ideology, including the writings of the foundational social-democratic thinker Eduard Bernstein (1890–1930); (2) the rise of competing visions of European unification put forward during the immediate prehistory of the European project (1919–57).

Alongside my research, I have written articles for press and media outlets including The Times, New Statesman, The Conversation, and Justice Everywhere. I am the Online Editor of the Journal of Political Ideologies, and founding Editor of its affiliated blog Ideology Theory Practice. My research on contemporary and historical progressive ideologies is designed to maintain close engagement with current policy debates, and I have built up extensive relationships with progressive policy research bodies at the UK, European, and global level. I am a policy consultant for Compass and Engage Britain; a member of the research networks for Policy Network (now Progressive Britain) and the Foundation for European Progressive Studies; and I am co-authoring a report on ‘resilient democracy’ for the international Progressive Alliance.