Revels are monthly, and usually include some daytime crafting. They are 2 mins from Archway station, N of Camden Town.
http://thamesreach.org
Check the calendar for future revels.

Other craft meets are TBA - we're considering monthly get togethers around 1st week of the month, near Islington (one member works at a college near there), but this still requires confirming the site. Can drop you a line when this is confirmed if you like.