The first Friday in July is Fairlop Fair in Hainault Forest, Essex:

http://www.hainaultforest.co.uk/3Fairlop%20Fair.htm

where a great number of people meet in a riotous and tumultuous manner, selling ale and spirituous liquors and keeping tippling booths and gaming tables to the great encouragement of vice and immorality.

18th century Essex Man, it seems.

Anybody know more about the 19th century songs mentioned there?