I'm not sure I understand what the point of the CTC website stop SMIDSY is?
Stop SMIDSY | Stop SMIDSYI can't see that it does anything practical, and my impression is that the combination of videos posted to YouTube, Roadsafe (sorry, London only), and reporting company drivers actually does have a strong effect. If I'm not mistaken, Stop SMIDSY isn't even publicly searchable for number plates.
p.s. I'm not having a dig, it's a genuine question. For example, I'm a huge fan of the CTC fillthathole website. That is a fine piece of work, and very useful.