The SharingCities (http://www.sharingcities.eu/) smart city projet including the cities of London, Milan, Lisbon, Bordeaux, Warsaw, and Burgas organized on March 7th and 8th a workshop in London on compliance with the General Data Protection Regulation that will have to be applied on May 25th, 2018 in Europe. The workshop was led by Antonio Kung, chair of the The Citizen approach to data: privacy-by-design initiative of the European Innovation Platform on Smart Cities and Communities (EIP-SCC – https://eu-smartcities.eu/content/citizen-centric-approach-data-privacy-design)