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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.
@pdlouche
Also:
https://www.bikechatforums.com/viewtopic.php?t=329885
https://www.bikesure.co.uk/bikesureblog/2020/02/ulez-motorcycle-guide.html
https://iopscience.iop.org/article/10.1088/1742-6596/2193/1/012023