The above pic is mine; but someone in the Netherlands also snapped the Noctilucent clouds on the same night – 21st June 2019
Plus, try these tags on Flickr noctilucentclouds and noctilucent
Plus this tweet and this tweet that links to this article
Edit: Thank you to archive.org (aka the Internet Archive or The Wayback Machine), otherwise I would have lost this post (when I broke my website a while back.)
[Archived at https://web.archive.org/web/20190721223221/http://www.lemonsquid.co.uk/]