We had one of those. Whenever I flicked the switch a few times, I imagined someone in Belgium or somewhere shouting "pack that in!"We have at least two mystery switches found so far, that is we don't know what they're for, yet
Here's the original picture I took with the location, date and time of when I took it. I've posted it several times on here before. Not only under the insulation but also boarded over now.I used to like the letters/stories in my brothers copies of those mags.
PS @Mottie if they are still under the insulation how come you are able to post photo's of them?