I really enjoyed seeing those three layouts too, Tom. Worcester Road in G1 was a delight to gaze at, even with movements limited to 'into and out of' the shed. So much interesting detail to take in. The weathering on these layouts was consistent and contributed greatly to the illusion of reality.
Another thing - I found myself complementing operators for the perfect sound levels on the 'oilers'. As you approached an engine it became prominent, but as you (or the engine) moved off the noise receded, just as in real life.
I asked for and received a lot of good advice. All in all a delightful day, a great atmosphere and loads of space to wander. The local groups had put on some nice photographic displays. I ran out of time to go back and chat with the guy who had a stunning collection of rail motors.
I did get distracted by the larger scales but held my cool. However I now have a few more bits and pieces for a scattergun cameo scene in a larger scale!