Paul,
Sorry about my contradiction in terms.
Basically what we have over here, is this:
A)Ceiling-Loop method: Feeds are run between
all ceiling roses on the circuit, no
junction boxes are required, a red wire
is taken from the live feed at the rose,
down to the switch and returns to the
rose, through a sleeved black wire,
this is sleeved red to signify that it is
live while the switch is on.
This wire then feeds one side of the lamp,
the other side is the circuit neutral.
The only advantage of this method is that
enables a two-core switch wire.
B)Switch-Looped method:Live feed is fed to
all switches on circuit, this is the
only method that complies with our new
regulations, as every lighting circuit,
must have a continuous earth
conductor at all points on the circuit,
regardless of what type of lighting is
being installed.
However, Paul, the switch loop method is
much safer, with the advent of more and
more Handyman type people fixing light
fittings, the ceiling loop method has
caused a few fatalities over here