In all the enthusiasm celebrating #OpenStreetMaps 20th birthday, I've noted a more sombre anniversary. The day before the 10th birthday party in London was when an #OpenAddresses symposium organised by @JeniT. Other than rather more addresses in #OpenStreetMap I'm not sure that we've moved very far with #OpenData for addresses in the UK.
There have been some sops from the #GeospatialCommision, such as OpenUPRNs, but usually heaviky compromised by lack of any relevant metadata.