Simon Addelsee was showing his narrow gauge layout Hobbiton End at Wilton. This fascinating little layout is inspired by life in the Shires, home of the Hobbits.
Shown to the right is Simons adaptation of the Greenwich coupling for remote uncoupling. When the loop is raised it is caught by the bar on the adjacent wagon which prevents recoupling.
Pretty ingenious if you ask me but the simplest ideas are usually the best and in this acse will be shamelessly copied!