Cycling UK is a trading name of the Cyclists' Touring Club (CTC), which is a charitable membership organisation supporting cyclists and promoting bicycle use. Cycling UK is registered at Companies House as "Cyclists’ Touring Club", and is covered by company law. It works at a national and local level to lobby for cyclists' needs and wants, provides services to members, and organises local groups for local activism and those interested in recreational cycling. The original Cyclists' Touring Club began in the nineteenth century with a focus on amateur road cycling but these days has a much broader sphere of interest encompassing everyday transport, commuting and many forms of recreational cycling. Prior to April 2016, the organisation operated under the brand "CTC, the national cycling charity". As of February 2020, the organisation's president is the newsreader Jon Snow.

A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered or motor-assisted, pedal-driven, single-track vehicle, with two wheels attached to a frame, one behind the other. A bicycle rider is called a cyclist, or bicyclist.