Philip Woolfson and I wrote an article for PL&B International about data portability, a new requirement of data protection law which will be introduced when the European Union General Data Protection Regulation (GDPR) applies on May 25, 2018.  Under this new regulation, data subjects have acquired a right to data portability (RDP). This article looks at developments in a selected regulated sector, financial services, to explore how RDP may be implemented successfully and where difficulties may arise.