It's a customised version of vBulletin 3.7. There's about 20,000 lines of custom code on this site though, as well as a few major extensions from 3rd parties that I've either purchased or commissioned.
@Velocio started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
It's a customised version of vBulletin 3.7. There's about 20,000 lines of custom code on this site though, as well as a few major extensions from 3rd parties that I've either purchased or commissioned.