GCR Rolling Stock Trust
A sole effort - classic ASP site built with a fully featured custom-built CMS enabling all text and binary content to be edited by the owners. This website was an early semi-responsive design... well okay, only the centre panel adjusted according to viewport width!
Possibly one of the longest-lived sites on the internet from 2004 to 2017! Still online as of writing at http://www.gcr-rollingstocktrust.co.uk/ but imminently due to be replaced with a more modern ubiquitous Wordpress site.