Unit 6C Tollington Park London N4 3QX Bike Repair & Servicing London | Fettle. Faff-free bike repair.Fettle. The home of faff-free bike repair. Covering the London area, fettle put the ‘service' back into bike servicing by providing the easiest, simplest and most convenient way of helping you get back on the road.As a general guide, bikes should be serviced every 6 months. However, they’ll need more TLC if you’re riding each day, or ride in heavy rain. If you commute to and from work, a proper service every 6 months, with a minor check up at the change of each https://www.fettle.cc