I have just sat looking at this stuff and reflecting upon the difficulty people are having. The European powers that be don't make it easy do they? If we also add in the almost unique UK variation which says that night flying must be IFR (but its not quite the same IFR that requires an IR of the pilot and a twin engine fully IFR helicopter?!) it seems as though the rules are designed to confuse.
Surely, the UK "IFR at night" rule must be on borrowed time with the onward march of EASA. You can do what the UK feds want by having extra rules for night VFR, like in most other countries, rather than saying you insist on IFR, but actually then removing most of the REAL IFR requirements, for visual contact night.