Indeed. I've been working with Continental and North American TT myself since the 90s, I've always wanted to do something British, considered 3mm (to stick with 12 mm gauge at least), but the gauge/scale discrepancy has always put me off. This is finally letting me get into some British outline modelling, too! Japanese N is 1:150 - but they're modelling Cape Gauge, so it's supposed to be narrow gauge.