Just to be pedantic, you can fly VFR at night.
Just to be more pedantic, only if you are military.
However, under the UK ANO, IFR are deemed to be complied with (at or below 3000ft) if an aircraft remains clear of cloud and in sight of the surface.
In effect, the rules allow us to fly "special VFR" at night, although that general term isn't used in the regulations.
(I'll give it no more than a couple of hours before DFC gets involved in this one, it's his favourite bar argument).
