Quote from their website:
This Forum was started several years ago by Cynric Williams who was keen to see a relaxed forum where modellers could share photos and notes on construction of models and layouts, particularly focusing on the larger scales, from 'S' & 'O' upwards.
The emphasis is on people “doing stuff”, in part a reaction against the wish lists and "box modellers" on other forums. The original nucleus of modellers had a fairly common interest in Western Region Diesel Hydraulics, hence the theme of the forum was set.
There is really only one rule and that is "to play nicely". There are a few other guidelines that Cynric used to apply but nothing too serious. It was simple things like no politics, sex, religion, no frothing and definitely no wish-listing; other forums are available for that kind of discussion.