Lovers' tryst   

  Several films have featured the idea going right back to 1932 (Boudu Sauvé Des Eaux) but it took until 2014 to reach lea marshes. The idea is for lovers to seal their tryst with a padlock attached to a bridge and then throw the keys into the river, making it impossible to undo. This romantic lock can be found at High Bridge over the Lea.  
Lea Marshes Bridges