The message
from "John" contains these words:

The light up in the loft currently gets its feed from the switched live of
the landing light so I have to have the landing light switched on to have
the loft light on. I want to be able to switch the loft light on and off
from the landing switch position but can forsee that someone may leave
it on
or switch it accidentally, hence the reason for wanting a neon indicator.

Wouldn't it be easier just to mount the switch either by the hatch so
you can see it but not knock it, or inside the loft so you can't forget
it?

--
Skipweasel
Pay no attention to that man behind the curtain.