The London Green Fair (previously known as the Camden Green Fair and Bikefest) is held on the first Sunday in June from 12noon - 7pm, at Regent's Park in London, England, coinciding with World Environment Day. The Fair aims to inspire Londoners to help make their capital a world-class Green City, letting visitors find out about the huge and growing number of sustainable companies, products, campaigns, and lifestyle choices that are available to all, every day. In 2011, the fair evolved to become known as the London Green Fair and in 2012 it celebrated its 20th anniversary and the event was held, for the first time across two days. The event does not allow camping. Admission is free.