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London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
@JesperXT
Just to follow up: I ended up taking the A23 on Hope with a pair of GP 4 Seasons in 25c. No punctures, no problems. Gave away all my spare tubes to locals who were tempting fate (and losing) by riding the worlds shittest tyre aka the Continental Ultra Sport, without tyre liners, extra tubes or patch kits.