In article , Mike Barnard
wrote:

The ceiling switch in my bathroom is as noisy as hell. Pull the cord
to turn on the light and it makes a very loud "kerching" noise. No,
you can't have a better description!

During the day it's not so bad, you get used to it, but at night it can
wake up my son who sleeps in the room next to the bathroom.

How about fitting a low energy bulb and just leaving it on all night?

--
Mike Clarke