"Lobster" wrote in message
...

snip


Hmm. I was all set to go with this, then looked at the wires coming out
of
the ceiling. There are *three* neutrals: one each for the mains and the
switch wires, and one emerging between them.

What's that about? Can I ignore it?

No don't do that! What you'll have is *two* mains cables entering the
rose;
one providing power to this light, and then taking power away to feed the
next light, ie continuing the circuit. Together with the switch cable
and
the one feeding the lightbulb, that makes 4.

I think the confusion has arisen because the link which somebody posted
earlier (http://www.userview.net/loop2.html)

That was me. I deliberately posted that link as the OP said the were two
wires at the ceiling.

shows the wiring for the last light on the circuit, where there's no
'next'
light to take power on to. There's a different diagram on the site for
your
configuration - see http://www.userview.net/loop1.html

It may be the case that there are 3 T&E wires after the OP has had a closer
look, but he says there is just an extra neutral. It may be a black single
that is used for another light (usually an outside or wall light when wired
like this).

Adam