I'm checking back on this thread again after a few hours after a tunnel of wikipedia and window shopping on ebay and model shops. This actually triggered some fond memories for me back from the 80s and 90s when I had a bit of a fling with the OO stuff and regularly used to do the rail tours. Something I regret stopping now suddenly and have a longing to jump into again now I'm older and have some disposable income!
Thanks for the inspiration