The non-display of NCT cert, does that mean cars with no NCT at all or just for not having the NCT disc in the window similar to the non display of tax disc penalty?

If its for having no NCT at all its actually a reduction imo, if i was the type to not bother with NCT i would be more willing to risk it with a 2 points and fixed charge fine rather than the previous court appearance and 5 points upon conviction.