Re: Windrush immigration papers scandal is a big fat GDPR fail for UK.gov
Agree with your comment, apart from the final three words. The Netherlands has "identiteitsplicht", an ID requirement. Basically everyone over 14 must at all times be able to show proof of identity and (depending on the circumstances) residence if requested by a policeman and certain other officials. Most Dutch citizens carry their credit card sized ID cards for this purpose. The cards are optional, and certainly more convenient than the alternative of carrying a passport. Non-Dutch EU-issued drivers licences may sometimes be treated as proof of identity but not residence.
When I lived in the Netherlands, I broke the strict letter of the law by carrying a drivers licence but not my passport. I never got fined, but it was sometimes inconvenient. e.g. when I forgot the post office would only let me pick up parcels if I had my passport.