What drives firm and sectoral productivity in the United Kingdom and in selected European countries?

This paper examines the link between barriers to trade and investment and productivity performance, in the United Kingdom and selected European countries using both firm-level and sectoral data. Barriers to trade and investment appear to be a robust determinant of productivity in the long term. Control variables such as spending on R&D and human capital also play a role, though their effects depend on the way they are measured or on the sample. The results are robust across a range of productivity measures as well as to changes in the sectoral coverage and the set of controls.