This is a beautiful part of Woodford, on the edge of Epping Forest and the perfect place for a quick grab and go cache, or better for a stroll and to feed the ducks!
You're looking for a small black container about the size of a deck of cards but double the thickness. At the time of leaving it contained some paper, a pencil, a couple of little plastic figures, a nerf gun bullet (don't ask..) and a trackable I found on my travels.
Good luck!