Research Interests: The EU policy process: including the role of interest groups; EU institutions; relationships between national governments and the EU; the implementation of EU policies; processes of institutionalisation. Comparative public policy: including the role of interest groups; political activism; policy styles; policy success and failure; policy change over time; public policy theories; environmental policy; transport policy; steel policy; privatisation and deregulation.​The institutionalisation of lobbying in the EU; the transposition of EU policies into national laws; changing policy styles in the EU; explaining policy change; the Swedish policy process.