Letting users tick a ‘none’ checkbox
Not from the UK, but I poke around on the portal from time to time. It's a true breath of fresh air. I love how you can deep dive into a specific topic of interest without <i>really</i> leaving your place. Example:
<a href="https://www.gov.uk/browse" rel="nofollow">https://www.gov.uk/browse</a><p>The way the menu behaves is both predictable AND useful for browsing around. My local government site is constantly whisking you off to separate sites, each with its own design language and unclear path back to my place of origin.<p>The team responsible for all this does it right.