Fuji,
Re 1000ft minimum altitude at night - I also think this is reasonable; hence I called the visibility and height limit changes academic. Low visibility combined with night makes for problematic IFR conditions, let alone VFR!
The ceiling change is what annoys me.
A and C,
Biggin Hill, Southend, Lydd (all used for night training) have ATIS, and use ceilometers. Hence the decision whether to fly a VFR circuit is as black-and-white as flying a CAT I ILS with less than 550m RVR. Illegal and reportable.