When viewing an 0 gauge layout one can really get the feel of the strength and power that the real thing has. This applies equally as well to the modern image layout as to the steam era.
Cherel Valley Railroad : An unusual one here as it's O gauge with 3-rail.
GWR : This site is dedicated to all things GWR and there are several layouts in 7mm plus much more.
Johnstown Road : This 7mm layout is part of the Barrowmore Model Railway Group.
Lenches Bridge & Ashwood Basin : Two layouts for the price of one here.