I agree entirely with all of the posts above. This is one of the best layouts I've ever seen in a number of ways. First, the scenery; I am studying it closely as inspiration for what I'm in the process of now. The prototypical operation is exactly what makes it come to life, and have such an atmosphere. This layout is truly a work of art. A miniature world.
Look at the goods stock. We have so, so, many top class, excellent layouts, with long goods trains of standard BR goods stock of types nothing like anything that ran here. This one has "proper" Irish stock. What a difference. Nobody would put a GWR pannier tank on a model of a suburban train to Cobh, so why BR goods stock on a layout set in rural Ballygobackwards?
Finally, the lack of clutter. For realism, it's better a field full of brambles, than a town, refinery, bus station, port and dear knows what else crammed into a corner beside the track.
Top class - does it go to exhibitions?