About the data

The list of English Heritage managed blue plaques in London was scraped from the list on their website. Information on blue plaques from local authorities was mainly obtained via polite Freedom of Information requests (with mixed results).

These ‘official’ data sources have been cleaned‐up, parsed and improved through a number of automatic and semi‐manual processes.

And finally, we’ve been improving the data through your notes and comments. The Flickr blue plaques pool - <a href="http://www.flickr.com/groups/blueplaques/pool/">www.flickr.com/groups/blueplaques/pool/</a> - in particular, has been a great help.

If you have any suggestions on additional sources of data about plaques installed in the UK, or have spotted any mistakes or errors in the data, please get in touch.

You are more than welcome to re‐use the data in any way you see fit. There’s no ‘official’ API yet, however you may find XML, YAML and JSON representations of many pages if you send the appropriate Accept: headers (or add .xml to the URL). Some of the HTML pages contain microformats too. If you’re interested in any specific data, or a specific format, please let us know.

We consider the data to be Public Domain, and make no claims of copyright over either the data we’ve collected ourselves, nor the value we’ve added to existing data. That said, we can accept no liability for any issues that may arise over the re‐use of this data, and you’re advised to make your own assessment. If you do re‐use the data, we’d love it if you could acknowledge Open Plaques, and link back to us - however you are under no obligation to do so.