Established in 2002 'The BIG One' Cycle Jumbles at Chalfont, Buckinghamshire features 80 stalls selling racing bikes, parts, accessories, hard-to-find and vintage. The event is the UK's biggest Cycle Jumble, held twice (sometimes three!) times a year in April and November at Epilepsy Society, Chesham Lane, Chalfont St Peter, Buckinghamshire, SL9 0RJ. Easily accessible from London, M1/M25/M4 and the M40. A friendly place to shop, meet friends and gain knowledge from some of the most charismatic people in the business. The event has raised over £35,000 for charity, since being established, for the Epilepsy Society (venue) to raise money for the centre's disability sports 'Phoenix Team'.