Data management is one of many privacy considerations that are likely to proliferate over the next 3- 5 years.
UK Citizens will ever increasingly demand choice and want to customize not just Data management but lmany services such as ' personal chatbot envoy on Facebook'. Similarly international trade and transactions must be negotiated automatically. To achieve this flexibility data management must anchor on identity. Estonia is, to my knowledge, a country that has one of the most advanced State providers: https://e-estonia.com/solutions/e-identity/. What can we learn from them?
Successful, flexible citizen services like data management strategy need to offer personal choice within nationally defined tolerances. Negotiations about digital standards will ever increasingly need to be negotiated automatically on borders. All this requires an vision and architecture for Identity. I'm not sure you can solve Data Management without first defining Identity and trust.