Watch this: How to repair a puncture

Still from Sustrans video

Happy Birthday to Sustrans! The sustainable transport charity turns 40 this year, clocking up four decades since forming an action group in Bristol.

Since then the organisation has been instrumental in putting cycling and walking on the map – literally, in many cases, by creating dedicated car-free paths and routes.

Sustrans has also managed UK-wide campaigns to encourage cycling to school, installed art along traffic-free networks and turned streets into safer places for kids to play out by reducing traffic.

But here we're going back to basics: a video on how to fix a puncture in your bicycle tyre.

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