High expectations surrounded the two waves of eastward EU enlargement in 2004 and 2007, with the extension of the EU Internal Market being expected to deliver a substantial boost to economic growth in new and old member States alike. Indeed, considerable progress has been made, with existing evidence pointing to increased trade and FDI flows, enhanced east-west migration and a more stable macroeconomic environment. However, completion of the internal market is progressing at an uneven pace, and comparatively less progress can be seen in services industries, which provide over two-thirds of jobs and value added in the economy. Empirical estimates suggest that competition and trade-enhancing reforms in services industries could generate substantial productivity improvements across EU member economies. Over a period of 10 years, the predicted increase in labour productivity resulting from a bold reform package is around 10% for the average EU country, and new member States stand to gain even more. In addition to service-sector reform, priorities towards a more integrated EU internal market should include removing remaining barriers to labour mobility, improving transport infrastructure, mutual recognition of qualifications, and enhanced market integration of network industries. Finally, a more explicit use of benchmarking may help to enhance the momentum of future internal market reforms.