Seabrooke"s research primarily concerns the role of professionals and experts in solving long-term social and economic problems, the politics of access to cr, tax, and property within economies, as well as international financial governance. He is a senior editor on the editorial team (2014-2018) of International Studies Quarterly, the flagship journal of the International Studies Association. Seabrooke is also editing the Oxford Handbook of International Political Economy with Jon Pevehouse.
Seabrooke was also the Director of Studies of the Warwick Commission on International Financial Reform, which brought together economists, political scientists, and lawyers from both the scholarly and policy worlds to discuss financial reform and re-regulation.
Seabrooke was Principal Investigator of the "Professions in International Political Economies" (PIPES) project (2011-2014) funded by the European Research Council and led a research team based at the Copenhagen Business School. He was a Work Package Leader of the "Global Reordering: Evolution though European Networks" (GR:EEN) large-scale integrating project (2011-2015), funded by the European Commission"s Seventh Framework Programme (FP7) for research.
From 2015 Len is Chief Scientist on a new European Commission Horizon 2020 project titled ENLIGHTEN ("European Legitimacy in Governing Through Hard Times"), which deals with how political and expert networks operate in "fast-burning" and "slow-burning" crises within Europe. He is also leading a new project tracing the careers, networks, and ideas of Anglo-American economists for the Institute for New Economic Thinking.