This book investigates how liberalization of service provision related to movement of natural persons takes shape within EU and WTO law. It provides an overview and analysis of the implementation of the identified obligations derived from EU law and the GATS in the Dutch legal order and that of the United Kingdom. A thorough investigation of the chosen strategies in each legal order is provided, including a comparison of the differences and similarities between these strategies. The resulting overview leads to insight into the tension that exists between the international obligations related to service mobility of the two investigated states on the one hand, and their migration law and access to the labour market legislation on the other.